Year	% of total population
1960	36.9994204603152
1961	36.8675573259965
1962	36.8685627426807
1963	36.8123840000423
1964	36.5115241344027
1965	36.1798134603632
1966	35.7959108430338
1967	35.3083343142507
1968	34.6992851765327
1969	34.0100391704568
1970	33.294794792076
1971	32.6259528299836
1972	31.9513652230666
1973	31.2354946708493
1974	30.530086258813
1975	29.8529379435213
1976	29.207608932757
1977	28.6467391497884
1978	28.214339421327
1979	27.8822935966295
1980	27.6232116759997
1981	27.4407742246863
1982	27.282269527449
1983	27.1167890050906
1984	26.9597401696199
1985	26.7999281540102
1986	26.6364983114133
1987	26.46615560203
1988	26.2735597762229
1989	26.0419108121599
1990	25.7549748700453
1991	25.3224355644415
1992	25.0965487252991
1993	25.1711033089905
1994	25.1573992595557
1995	24.9367176017307
1996	24.5109191513196
1997	23.9549683208069
1998	23.3321799075885
1999	22.8110190912691
2000	22.4774287508118
2001	22.2792716803092
2002	21.998298088328
2003	21.583956680914
2004	21.1365860508427
2005	20.6455833979783
2006	20.1442715557413
2007	19.6786110599149
2008	19.2489359978564
2009	18.8324889492353
2010	18.4557423054807
2011	18.1041242916705
2012	17.7917558555031
2013	17.5304815324594
2014	17.3097685783105
2015	17.1166036199894
2016	16.9116044196842
2017	16.676613895454
2018	16.4229939942966
2019	16.2245007038203
2020	16.1207708976224
2021	16.0657861581397
2022	16.0105913335341
2023	15.9203789269586