Year	% of total population
1960	52.8851698125795
1961	52.7878652438684
1962	52.6087663217208
1963	52.3940842780599
1964	52.1818227972347
1965	51.9720998050427
1966	51.7598458598625
1967	51.5499831189957
1968	51.3462851882646
1969	51.1499906650773
1970	51.0084870257813
1971	51.0294543534182
1972	51.2165704236266
1973	51.458432907407
1974	51.6984772044736
1975	51.9425051334702
1976	52.189632428383
1977	52.4323747773838
1978	52.6708054606414
1979	52.9049825634166
1980	53.0951915620646
1981	53.0966875392527
1982	52.9576886420956
1983	52.8260784177466
1984	52.7043905172696
1985	52.5891948192565
1986	52.4781349576351
1987	52.3724040628817
1988	52.2737116860542
1989	52.1806505654056
1990	52.0990884977356
1991	52.0273877779894
1992	51.9524960269357
1993	51.8773500379069
1994	51.8078948351197
1995	51.7450933682076
1996	51.6886892616987
1997	51.6382060772685
1998	51.5912715179435
1999	51.5453920694264
2000	51.4416771594607
2001	51.2829482485546
2002	51.130843076637
2003	50.9865879034929
2004	50.8501119027997
2005	50.7186091671114
2006	50.5907184836555
2007	50.4696542528426
2008	50.3525128542764
2009	50.2366000954158
2010	50.1941628358518
2011	50.2175268851856
2012	50.2259002292719
2013	50.232062821795
2014	50.244288340817
2015	50.2546335703393
2016	50.2618222975175
2017	50.264446308903
2018	50.2652301637599
2019	50.2670571720708
2020	50.2703212961692
2021	50.2751201258664
2022	50.2806208895235
2023	50.2831219244941