SOA Annual Symposium Shanghai. November 5-6, Shanghai, China
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1 SOA Annual Symposium Shanghai November 5-6, 2012 Shanghai, China Session 2b: Mortality Improvement and Longevity Risk: Implication for Insurance Company in China Xiaojun Wang
2 Xiaojun Wang Renmin University of China Agenda Background Mortality improvement in China Modeling mortality and longevity Implication of longevity risk for China Longevity risk management 1
3 Background Global ageing and longevity trend Lot of analysis and research relating to mortality improvement and longevity risk for developed countries China face more serious ageing and longevity problem in the future But, poor and limited research on mortality How to measure and manage mortality risk for social security, pension, annuities in China? Global Ageing Trend Old age support rate in selected countries, (Number of people of working age (20-64) per person of pension age (65+)) Source: OECD (2011), Pensions at a Glance, OECD Publishing, Paris ( United Nations, World Population Prospects Revision. 4 2
4 Source: Historical data from the OECD Health database. Projections based on the United Nations Population Division database 6 3
5 Literature Google scholar Mortality improvement 1970,000 results 736,000 results since ,700 results since 2012 Longevity risk 260,000 results 81,700 results since , results since 2012 Conference and seminar International Longevity Risk and Capital Markets Solutions Conference, th.(from 2005) Population Ageing in China Data from 2010 Population Census TFR:China 1.18; Beijing, Shanghai,0.7; Guangxi, Guizhou, ; Xinjiang, Life expectancy: 72.5 Population: 1.33 billion Aged 60 and over: 178 million (13.3%) Aged 65 and over: 119 million (8.87%) Old age Support rate 7.5 for (20-64)/ (65+) 5.2(16-59)/
6 Population and Growth rate population(100 million) growth rate(%) Source: from the United Nations 2010, World Population Prospects, middle assumption Median age and Population rate (year, %) Median age Ratio of year 60+ Dep ratio of 60+ Working age ratio Source: from the United Nations 2010, World Population Prospects, middle assumption 10 5
7 Age Pyramid 2010 年 2020 年 2030 年 2040 年 2050 年 2060 年 11 Age-specific mortality rate( ) < Source: Xiaojun Wang, Haijie Mi(2012) 6
8 Mortality improvement Data( 23 years) Census: 1981/1989/2000/2010 1% sample: 1986/1995/ sample: from1990 per year t k t~ t k q Formula: x rx 1 t qx q q r 1 k t k t t~ t k k x x (1 x ) Historical Mortality improvement rate (%) Source: Xiaojun Wang, Haijie Mi(2012) 7
9 Annualized mortality improvement rate by age, (%) < Source: Xiaojun Wang, Haijie Mi(2012) Annualized mortality improvement rate during three periods(%) Source: Xiaojun Wang, Haijie Mi(2012) 8
10 Annualized mortality improvement rate by gender, (%) Male Female Source: Xiaojun Wang, Haijie Mi(2012) Mortality improvement for regions (%) City Town Rural Source: Xiaojun Wang, Haijie Mi(2012) 9
11 Mortality improvement between insured and general population, male, (%) General Population annuity life Source: Xiaojun Wang, Haijie Mi(2012) Mortality improvement between insured and general population, female, (%) General Population annuity life Source: Xiaojun Wang, Haijie Mi(2012) 10
12 Mortality improvement by Country, (%) age country US Canada UK Australia Japan Russia Bulgaria China Source: Xiaojun Wang, Haijie Mi(2012) Mortality trends in survival function Source: Pitacco, Denuit, Haberman, and Olivieri: Modelling Longevity Dynamics for Pensions and Annuity Business, Oxford University Press,
13 Mortality risk Case (a): insurance risk Case (b): longevity risk (model and parameter risk) Case (c): catastrophe risk Source: Pitacco, Denuit, Haberman, and Olivieri: Modelling Longevity Dynamics for Pensions and Annuity Business, Oxford University Press, 2009 Mortality forecasts Source: Pitacco, Denuit, Haberman, and Olivieri: Modelling Longevity Dynamics for Pensions and Annuity Business, Oxford University Press,
14 Stochastic mortality models Lee-carter model (LC) Lee and Carter(1992) Age period cohort model(apc) Renshaw and Haberman(2006) Cairns Blake Dowd model(cbd) Cairns-Blake-Dowd(2006) Other Techniques for projecting mortality Gompertz Makeham GLM (Generalized linear models) Heligman-Pollard Poisson log-bilinear P-Spline Renshaw-Haberman Weibull 13
15 LC model and application in China, ln m x t x x t x t, are age factors and is time factor x x t One estimated method was proposed in Bell(1997) ln m t ln m t, t t. x x n x t tn n Log-mortality for 1981/1989/2000/2010 Source: Xiaojun Wang, Wendong Ren(2012) 14
16 The predictive value and 95% confidence level of t male female Source: Xiaojun Wang, Wendong Ren(2012) 15
17 Mortality forecast for ( ) Age group Implication of longevity risk for annuity Pricing Reserve Required capital 32 16
18 Mortality improvement by age (%) Age Age Comparing the regulated and estimated annuity factor for social basic pension i 3% Age Regulated Estimated Increase % Estimated Increase % Estimated Increase % i 4% age Regulated Estimated Increase % Estimated Increase % Estimated Increase %
19 Longevity risk management Risk Mitigation Loss Control Loss Prevention(Frequency Control) Loss Reduction(Severity Control) Product Design(Participation) Loss Financing Natural Hedging Reinsurance Capital market Solutions A Stop-Loss reinsurance arrangement on annual outflows Source: Pitacco, Denuit, Haberman, and Olivieri: Modelling Longevity Dynamics for Pensions and Annuity Business, Oxford University Press,
20 The securitization process in life insurance: a simplified structure Source: Pitacco, Denuit, Haberman, and Olivieri: Modelling Longevity Dynamics for Pensions and Annuity Business, Oxford University Press, 2009 The End 19
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