DRM presentation Template Purpose CAS Working Party created these sample slides for presentations involving elements of Dynamic Risk Modeling (DRM) CAS Working Party believes that quality of the presentation of DRM findings to the management can be significantly improved CAS Working Party carefully selected topics for slides and for every topic chose the best suitable chart design 2003 CAS Research working party 2 Instructions You can use some or all slides for your presentation All slides in this template are “live”: that is, editable Excel objects inside PowerPoint: double-click on the chart to access spreadsheet behind it you can change Chart properties on the “Chart 2” page you can paste or generate your data on the “Sheet1” page you can use all Excel formulae, macros and chart options All green text comments and arrows are PowerPoint objects which can be easily edited and/or animated 2003 CAS Research working party 3 Disclaimer THIS PRESENTATION AND THE ACCOMPANYING DOCUMENTS ARE SUPPLIED "AS IS" AND WITHOUT WARRANTIES AS TO PERFORMANCE OF MERCHANTABILITY OR ANY OTHER WARRANTIES WHETHER EXPRESSED OR IMPLIED. Because of the various hardware and software environments into which these slides may be run, NO WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE IS OFFERED If you are still reading this legalese nonsense, you need to get a life. Sorry. 2003 CAS Research working party 4 DRM Presentation.doc Text (skeleton) Foreword Charts (muscles) Anatomy … Some of Text Presentation … Animation Software Ranking Development (skin) Logic Flow Conclusion Reference Websites Uncertainty Allocation (brains) Articles Appendix 2003 CAS Research working party 5 Uncertainty Aggregate Distribution Profit distribution 1 0.28 0.24 0.8 Probability 0.2 0.6 0.16 Stop Loss 0.12 0.4 0.08 0.2 0.04 0 0 -60 -50 -40 -30 -20 -10 10 0 20 30 40 Mil pdf cdf 2003 CAS Research working party 7 Reinsurance options 99% Range of Outcomes Option4 Option3 Option2 Less risky Option1 Less rewarding -40 -20 0 20 40 60 2003 CAS Research working party 80 100 120 Millions 8 Liability cash flow Distributions of Liability Cash Flow 0.8 0.7 0.5 0.4 0.3 0.2 0.1 2006 2005 2003 CAS Research working party 0 200 Millions 400 600 2003 800 1,000 1,200 1,400 1,600 1,800 2004 Years 2,000 2,200 2,400 0 2,600 Probability 0.6 9 Liability cash flow Distributions of Liability Cash Flow Distributions of Liability Cash Flow 0.8 0.7 0.8 0.5 0.7 0.5 0.3 0.2 0.1 2006 2005 300 900 700 500 Millions 2003 1,100 1,500 1,300 1,900 1,700 2,300 2004 Years 2,100 2,500 2,700 0 2,700 2,500 2,300 2,100 1,900 1,700 1,500 Millions 1,300 1,100 900 700 500 300 0.4 0.3 0.2 0.1 0 2006 2005 2004 2003 Distributions of Liability Cash Flow Probability 0.6 0.4 Years Distributions of Liability Cash Flow 2,700 2,500 2,300 2,100 Probability Probability 0.6 2,700 2,500 2,300 2,100 1,900 1,700 Millions 1,500 1,300 1,100 900 700 500 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.10 1,900 1,700 Millions 1,500 1,300 1,100 900 700 500 300 2003 2004 2005 300 Probability 0.1 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0 2006 2003 Years 2004 2005 2006 Years 2003 CAS Research working party 10 Liability cash flow Billions Range of Liability Cash Flow Over Time 3.0 Max 90-95%ile 2.5 75-90%ile 50-75%ile 2.0 25-50%ile 10-25%ile 1.5 5-10%ile 0-5%ile 1.0 Min Avg 0.5 0.0 2003 2004 2005 2006 2007 2008 2009 2010 2011 2003 CAS Research working party 2012 2013 2014 11 Liability cash flow Billions Range of Liability Cash Flow Over Time 3.0 Max 90-95%ile 2.5 75-90%ile 50-75%ile 2.0 25-50%ile 10-25%ile 1.5 5-10%ile 0-5%ile 1.0 Min Avg 0.5 0.0 2003 2004 2005 2006 2007 2008 2009 2010 2011 2003 CAS Research working party 2012 2013 2014 12 Liability cash flow Billions Range of Liability Cash Flow Over Time 3.0 Max 90-95%ile 2.5 75-90%ile 50-75%ile 2.0 25-50%ile 1.5 10-25%ile 5-10%ile 1.0 0-5%ile Min 0.5 0.0 2003 2004 2005 2006 2007 2008 2009 2010 2011 2003 CAS Research working party 2012 2013 2014 13 Liability cash flow Billions Range of Liability Cash Flow Over Time 3.0 Max 90-95%ile 2.5 75-90%ile 50-75%ile 2.0 25-50%ile 1.5 10-25%ile 5-10%ile 1.0 0-5%ile Min 0.5 0.0 2003 2004 2005 2006 2007 2008 2009 2010 2011 2003 CAS Research working party 2012 2013 2014 14 Liability cash flow Range of Liability Cash Flow Over Time Billions Max 2.5 90-95%ile 75-90%ile 2.0 50-75%ile 1.5 25-50%ile 10-25%ile 1.0 5-10%ile 0-5%ile 0.5 0.0 2003 Min 2004 2005 2006 2007 2008 2009 2010 2011 2003 CAS Research working party 2012 2013 2014 15 Use of Capital by LOB LOBs Performance 5.00% 4.50% 4.00% LOB4 3.50% RoE 3.00% LOB3 2.50% 2.00% LOB1 1.50% 1.00% LOB2 0.50% 0.00% 0.00% 1.00% 2.00% 3.00% 4.00% 5.00% 6.00% 7.00% 8.00% 9.00% 10.00% Capital Consumption 2003 CAS Research working party 16 Dare to compare LOBs Performance 10.00% 9.00% Capital Consumption 8.00% LOB4 7.00% 6.00% LOB1 5.00% 4.00% LOB3 3.00% LOB2 2.00% Which one is Better? 1.00% 0.00% 0.00% 0.50% 1.00% 1.50% 2.00% 2.50% 3.00% 3.50% 4.00% 4.50% 5.00% ROE 2003 CAS Research working party 17 Uncertainties pile up Calculating changes in NPV Investment Return Uncertainty Discount Uncertainty Payout Uncertainty Reserve Uncertainty -250 -200 -150 -100 -50 0 50 100 2003 CAS Research working party 150 200 250 300 Millions 18 Uncertainties pile up Calculating changes in NPV Probability 0.2 0.1 +Investment Unceratinty +Discount Uncertainty 0 +Payout Uncertainty -200 -160 -120 -80 -40 Mil 0 40 Reserve Uncertainty 80 120 160 200 2003 CAS Research working party 19 Ranking Value of Reinsurance Projected Combined Ratios with and without reinsurance 3.4 2.9 current reinsurance Projected Likelihood 2.4 1.9 no reinsurance 1.4 0.9 what you get back 0.4 what you give up -0.1 0.6 0.8 1 1.2 1.4 2003 CAS Research working party 1.6 1.8 2 21 Dare to compare LOBs Performance 10.00% 9.00% Capital Consumption 8.00% LOB4 7.00% 6.00% LOB1 5.00% 4.00% LOB3 3.00% LOB2 2.00% Which one is Better? 1.00% 0.00% 0.00% 0.50% 1.00% 1.50% 2.00% 2.50% 3.00% 3.50% 4.00% 4.50% 5.00% ROE 2003 CAS Research working party 22 Reinsurance options Risk-Reward 0.58 Millions 26 25 0.49 Std. Deviation 24 40.74, 23.6 23 0.46 46.99, 22.97 22 48.66, 22.15 44.04, 21.57 21 20 40 41 42 43 44 45 46 47 48 49 50 Millions Underw riting Result 2003 CAS Research working party 23 Reinsurance options Risk-Reward Millions 26 25 Std. Deviation 24 40.74, 23.6 23 46.99, 22.97 22 48.66, 22.15 21 44.04, 21.57 20 40 41 42 43 44 45 46 47 48 49 50 Millions Underw riting Results 2003 CAS Research working party 24 Different criteria Max ROE per Capital Max ROE per Capital 2 LOBs Performance LOBs Performance 10.00% 10.00% 9.00% 9.00% 8.00% LOB4 7.00% Capital Consumption Capital Consumption 8.00% 6.00% LOB1 5.00% 4.00% LOB3 3.00% LOB2 2.00% 6.00% LOB1 5.00% 4.00% LOB3 3.00% LOB2 2.00% 1.00% 0.00% 0.00% LOB4 7.00% 1.00% 0.50% 1.00% 1.50% 2.00% 2.50% 3.00% 3.50% 4.00% 4.50% 5.00% 0.00% 0.00% 0.50% ROE 1.00% 1.50% 2.00% 2.50% 3.00% 3.50% 4.00% 4.50% 5.00% ROE Still the best 2003 CAS Research working party 25 Development & Trends Cash Flow over time Billions Run-Off Payout 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 1997 1998 1999 2000 2001 2003 CAS Research working party 2002 2003 2004 27 Cash Flow over time Billions Range of Liability Cash Flow Over Time (10 - 90 percentiles) 3.0 2.5 Theoretically possible ranges 2.0 More realistic outcomes 1.5 1.0 0.5 0.0 2003 2004 2005 2006 2007 2008 2009 2010 2003 CAS Research working party 2011 2012 2013 2014 28 Cash Flow over time Billions Range of Liability Cash Flow Over Time (5-95 percentiles) 3.0 Max 90-95%ile 2.5 75-90%ile These “bumps” are dividend payments 50-75%ile 2.0 25-50%ile 10-25%ile 1.5 5-10%ile 0-5%ile 1.0 Min Avg 0.5 0.0 2003 2004 2005 2006 2007 2008 2009 2010 2011 2003 CAS Research working party 2012 2013 2014 29 RoE development GAAP RoE 25.00% 20.00% 5 %ile 15.00% 20 %ile 10.00% 50 %ile 5.00% 80 %ile 0.00% 95 %ile -5.00% Stable and slightly increasing -10.00% 1998 1999 2000 2001 2002 2003 2003 CAS Research working party 2004 2005 30 RoE comparison GAAP RoE (no-Reinsurance vs. Reinsurance) 30.00% Curr 5%ile 25.00% Curr 20%ile 20.00% Curr 50%ile Curr 80%ile 15.00% Curr 95%ile 10.00% Alt 5%ile 5.00% Alt 20%ile 0.00% Alt 50%ile -5.00% Alt 80%ile Alt 95%ile -10.00% 1998 1999 2000 2001 2002 2003 2003 CAS Research working party 2004 2005 31 Asset – Liability Matching Asset - Liability Matching 8 7 6 Billions 5 4 Losses Assets 3 2 Not enough 1 0 -1 1998 1999 2000 2001 2002 2003 2003 CAS Research working party 2004 2005 32 Asset – Liability Matching Asset - Liability Matching 8 7 6 Billions 5 Losses Assets 4 Poly. (Assets) 3 Poly. (Losses) 2 Not enough and getting worse 1 0 -1 1998 1999 2000 2001 2002 2003 2004 2003 CAS Research working party 2005 2006 33 Cash Flow Forecast Billions Cash Flow Over Time 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 1997 1998 1999 2000 2001 2002 2003 2004 2003 CAS Research working party 2005 2006 2007 2008 34 Simulations Hedging Increase in Capital & Surplus 10.00% 8.00% Increase With Hedge 6.00% 4.00% 2.00% 0.00% -2.00% -4.00% -6.00% -8.00% -10.00% -10.00% -8.00% -6.00% -4.00% -2.00% 0.00% 2.00% 4.00% 6.00% 8.00% 10.00% Increase Without Hedge 2003 CAS Research working party 36 Allocations Change in Allocation 11.0% 7.0% 51.0% Bonds 31.0% Equity Cash 7.0% Other 11.0% 11.0% 71.0% Less Equity More bonds 2003 CAS Research working party 38 Change in Allocation Investment Strategies Alt 7.0% Alt 11.0% Bonds 7.0% 11.0% Equity Alt 11.0% Cash 51.0% 31.0% Less Equity Other Alt 71.0% More bonds 2003 CAS Research working party 39 Change in Allocation Investment Strategies More bonds Less Equity 71.0% 80.0% 70.0% 60.0% 50.0% 51.0% 40.0% Curr 30.0% Alt 31.0% 20.0% 11.0% 11.0% 10.0% 11.0% 0.0% 7.0% 7.0% Bonds Equity Alt Cash Other 2003 CAS Research working party Curr 40 Change in Allocation Investment Strategies 80.0% More bonds Less Equity 71.0% 70.0% 60.0% 51.0% 50.0% Curr Alt 40.0% 31.0% 30.0% 20.0% 11.0% 11.0% 11.0% 7.0% 10.0% 7.0% 0.0% Bonds Equity Cash 2003 CAS Research working party Other 41 Change in Allocation Investment Strategies 80.0% More bonds Less Equity 71.0% 70.0% 60.0% 51.0% 50.0% Curr Alt 40.0% 31.0% 30.0% 20.0% 11.0% 11.0% 11.0% 7.0% 10.0% 7.0% 0.0% Bonds Equity Cash 2003 CAS Research working party Other 42 Change in Allocation Investment Strategies 80.0% More bonds Less Equity 70.0% 60.0% 50.0% 40.0% 30.0% 20.0% 10.0% 0.0% Bonds Equity Cash Other Curr 51.0% 31.0% 11.0% 7.0% Alt 71.0% 11.0% 11.0% 7.0% 2003 CAS Research working party 43 Change in Allocation Investment Strategies Less Equity 100% 80% More bonds 51.0% 71.0% 60% 40% 31.0% 11.0% 20% 0% 11.0% 7.0% 11.0% 7.0% Curr Alt Bonds 51.0% 71.0% Equity 31.0% 11.0% Cash 11.0% 11.0% Other 7.0% 7.0% 2003 CAS Research working party 44 Change in Allocation Portfolio structure 100% 7.0% 11.0% 80% 7.0% 11.0% 11.0% 5.0% 12.0% 6.0% 12.0% 25.0% 10.0% 5.0% 31.0% 60% 26.0% 12.0% 40% 71.0% 77.0% 60.0% 51.0% 50.0% 20% 0% 1998 1999 2000 2001 2002 Other 7.0% 7.0% 5.0% 25.0% 12.0% AL 11.0% 11.0% 12.0% 10.0% 26.0% GL 31.0% 11.0% 6.0% 5.0% 12.0% WC 51.0% 71.0% 77.0% 60.0% 50.0% 2003 CAS Research working party It was a VERY bad idea 45 Change in Allocation Portfolio structure It was a VERY bad idea 100% 90% 80% 70% 51.0% 60.0% 71.0% 60% 50.0% 77.0% 50% 12.0% 40% 30% 5.0% 10.0% 31.0% 11.0% 20% 11.0% 11.0% 7.0% 7.0% 6.0% 26.0% 25.0% 1998 1999 12.0% 5.0% 2000 WC 51.0% 71.0% 77.0% 60.0% 50.0% GL 31.0% 11.0% 6.0% 5.0% 12.0% AL 11.0% 11.0% 12.0% 10.0% 26.0% Other 7.0% 7.0% 5.0% 25.0% 12.0% 10% 0% 2003 CAS Research working party 12.0% 2001 2002 46 Visual Selections Visual Selections Payout Pattern 102.0% 100.0% 98.0% 96.0% Avg Slow 94.0% Fast 92.0% Industry Can edit – right on the chart! Selected 90.0% 88.0% 86.0% 84.0% 0 12 24 36 48 60 72 84 2003 CAS Research working party 96 108 120 48 Conventions Lines, Colors, Shapes Probability Density Function 0.28 “connect the dots” curve 0.24 Probability 0.20 0.16 0.12 0.08 0.04 0.00 -60 -55 -50 -45 -40 -35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30 35 40 Outcomes ($Mil) 2003 CAS Research working party 50 Lines, Colors, Shapes expected 2003 CAS Research working party 51 Lines, Colors, Shapes GAAP RoE 25.00% 20.00% 5 %ile 15.00% 20 %ile 10.00% 50 %ile 5.00% 80 %ile 0.00% 95 %ile -5.00% -10.00% 1998 1999 2000 2001 2002 2003 2003 CAS Research working party 2004 2005 52 Lines, Colors, Shapes Std. deviation Millions Risk vs. Reward 30 25 Good 20 Better 15 Better yet 10 5 0 $- The best $5 $10 $15 $20 $25 $30 $35 $40 $45 $50 Millions Return 2003 CAS Research working party 53 Not to Do Too Much Info 50% 40% Expected Return L 30% J I H 20% G N R Q O P F K C D E B A M 10% 0% 0.0% 0.5% 1.0% 1.5% 2.0% Level of Risk 2003 CAS Research working party 55 Too Much Info 2003 CAS Research working party 56 Missing Info Risk Return Tradeoff Chart Return - Expected SAP Net Income (after-tax) 40,000 35,000 NO REIN 30,000 STOP LOSS EXCESS 25,000 20,000 PRO RATA 15,000 10,000 30,000 35,000 40,000 45,000 50,000 55,000 60,000 65,000 70,000 Risk - Standard Deviation of Net Income (after-tax) 2003 CAS Research working party 57 Missing Info Risk Return Tradeoff Chart W or se Be tte r Ju st O K $40,000 Return - Expected SAP Net Income (after-tax) $35,000 No Rein $30,000 Stop Loss Excess $25,000 $20,000 Pro Rata $15,000 $10,000 $30,000 $35,000 $40,000 $45,000 $50,000 $55,000 $60,000 $65,000 $70,000 Risk - Standard Deviation of Net Income (after-tax) 2003 CAS Research working party 58 Presentation Flow Old version Line of Business A Corporate Elements •Business volume •Business characteristics •Pricing Starting Balance Sheet Reinsurance Program* Investment Strategy Capital Structure Tax Calculator Non-Insurance Income Affiliate Results •Claims • Paid and Reserved •Expenses •Cash flow pattern •Reserving patterns •Policyholder dividends Line of Business B Financial Calculator Year 1 Financial Results Line of Business C •Balance Sheet ... Line of Business Z •Income Statement GAAP Statutory Economic Analyzer Measures of •Risk •Return 2003 CAS Research working party •Capital Requirements 60 DRM flow LOB 1 Business characteristics and patterns Starting Balance Sheet Corporate Elements LOB 2 Business characteristics and patterns LOB 3 Reinsurance Investment Capital Mix Taxes Financial Calculator Business characteristics and patterns Year 1 Financial Results Analyzer •Balance Sheet •Income Statement 2003 CAS Research working party Measures of •Risk •Return Capital Requirement 61 DRM flow Assumptions/Model ( x) ( x ) 1 Assumptions Test Parameters 1.892 219,300 H 0 : FX ( x) F ( x; , ) H1 : FX ( x) F ( x; , ) Profit distribution 0.28 E (NPVcompany ) $25.5M 1 0.24 Probability Option 2: Buy Reinsurance 0.8 0.2 0.16 0.6 0.12 0.4 0.08 0.2 0.04 0 0 -60 -50 -40 -30 -20 -10 Results 0 10 20 30 40 Simulations 2003 CAS Research working party 62 Model / Assumptions ( x) ( x ) 1 1.892 219,300 H 0 : FX ( x) F ( x; , ) H1 : FX ( x) F ( x; , ) Profit distribution 0.28 E (NPVcompany ) $25.5M 1 0.24 Probability Option 2: Buy Reinsurance 0.8 0.2 0.16 0.6 0.12 0.4 0.08 0.2 0.04 0 0 -60 -50 -40 -30 -20 -10 2003 CAS Research working party 0 10 20 30 40 63 Model / Assumptions ( x) Adequate complexity ( x ) 1 • enough parameters Not overwhelmingly convoluted • not too many parameters Accurately represents processes and relationships • enough equations 2003 CAS Research working party 64 Parameters ( x) ( x ) 1 1.892 219,300 H 0 : FX ( x) F ( x; , ) H1 : FX ( x) F ( x; , ) Profit distribution 0.28 E (NPVcompany ) $25.5M 1 0.24 Probability Option 2: Buy Reinsurance 0.8 0.2 0.16 0.6 0.12 0.4 0.08 0.2 0.04 0 0 -60 -50 -40 -30 -20 -10 2003 CAS Research working party 0 10 20 30 40 65 Parameters Industry Statistics 1.892 219,300 • LDF, inflation Fit • maximum likelihood, minimum squares Guess • actuarial judgment 2003 CAS Research working party 66 Simulations ( x) ( x ) 1 1.892 219,300 H 0 : FX ( x) F ( x; , ) H1 : FX ( x) F ( x; , ) Profit distribution 0.28 E (NPVcompany ) $25.5M 1 0.24 Probability Option 2: Buy Reinsurance 0.8 0.2 0.16 0.6 0.12 0.4 0.08 0.2 0.04 0 0 -60 -50 -40 -30 -20 -10 2003 CAS Research working party 0 10 20 30 40 67 Simulations Fast Profit distribution 0.28 1 Probability 0.24 0.8 • not too many 0.2 0.16 0.6 0.12 0.4 0.08 0.2 0.04 0 0 -60 -50 -40 -30 -20 -10 0 10 20 30 40 Adequate precision • not too few The best way to model uncertainty • believe me – I’ve tried 2003 CAS Research working party 68 Results ( x) ( x ) 1 1.892 219,300 H 0 : FX ( x) F ( x; , ) H1 : FX ( x) F ( x; , ) Profit distribution 0.28 E (NPVcompany ) $25.5M 1 0.24 Probability Option 2: Buy Reinsurance 0.8 0.2 0.16 0.6 0.12 0.4 0.08 0.2 0.04 0 0 -60 -50 -40 -30 -20 -10 2003 CAS Research working party 0 10 20 30 40 69 Results Usually a distribution • to represent multiple possible outcomes Option 2: Buy Reinsurance E (NPVcompany ) $25.5M Require interpretation • that what are actuaries for Attuned for decision making • that’s the whole idea, isn’t it 2003 CAS Research working party 70 Assumptions Testing ( x) ( x ) 1 1.892 219,300 H 0 : FX ( x) F ( x; , ) H1 : FX ( x) F ( x; , ) Profit distribution 0.28 E (NPVcompany ) $25.5M 1 0.24 Probability Option 2: Buy Reinsurance 0.8 0.2 0.16 0.6 0.12 0.4 0.08 0.2 0.04 0 0 -60 -50 -40 -30 -20 -10 2003 CAS Research working party 0 10 20 30 40 71 Assumptions Testing Feedback H 0 : FX ( x) F ( x; , ) • impossible results trigger review of assumptions H1 : FX ( x) F ( x; , ) Parameters testing • checking acceptability hypothesis Bayesian corrections • new data allow to adjust parameters a posteriori 2003 CAS Research working party 72 Liquidity Liquidity Management 5% 750% 4% 640.00% 3% 600% 450% 2% 300% 2.00% 1% 1.50% 200.00% 150% 0% 0% Policy Requirement Actual Operating Liquidity Policy Requirement Actual Event Liquidity 2003 CAS Research working party 73 License Can use – can’t sell © 2003. CAS “Executive Decision Making Using DRM” Research Working Party © 2003. Design. Aleksey Popelyukhin 2003 CAS Research working party 74 References http://www.dfa.com/flash.html http://www.casact.com/coneduc/dfa/2000/handouts/leibowitz.ppt http://www.casact.com/coneduc/rcm/2003/RCMHandouts/bohra1.ppt http://www.casact.com/coneduc/rcm/2003/RCMHandouts/isaac2.ppt http://www.casact.com/coneduc/dfa/2001/handouts/stricker1.ppt http://www.casact.com/coneduc/dfa/2001/handouts/schwartz1.pdf http://www.casact.com/coneduc/dfa/99dfa/handouts/newman.ppt http://www.casact.com/coneduc/dfa/99dfa/handouts/conger.ppt http://www.casact.com/coneduc/reinsure/2001/handouts/venter1.ppt 2003 CAS Research working party 75 Charting Software Power Plugs for Power Point: Chart (http://www.crystalgraphics.com/presentations/charts.m ain.asp) Tecplot (http://www.tecplot.com) NetCharts (http://www.visualmining.com/examples/graphs.html) Mathematica (http://www.wolfram.com/solutions/statistics/packages. html) 2003 CAS Research working party 76 Use of Capital by LOB LOBs Performance 10.00% 9.00% Capital Consumption 8.00% LOB4 7.00% 6.00% LOB1 5.00% 4.00% LOB3 3.00% LOB2 2.00% 1.00% 0.00% 0.00% 0.50% 1.00% 1.50% 2.00% 2.50% 3.00% 3.50% 4.00% 4.50% 5.00% ROE 2003 CAS Research working party 77