Year	% of total population
1960	9.79331315487632
1961	10.031232191275452
1962	10.194197465135856
1963	10.309382054733566
1964	10.43735956198526
1965	10.57596685819405
1966	10.694814867716122
1967	10.807532354347675
1968	10.923709947013515
1969	11.040516545801914
1970	11.159905070518738
1971	11.283086121855764
1972	11.427365583381548
1973	11.575407632454835
1974	11.73073844785279
1975	11.834699966872673
1976	11.996246791169765
1977	12.168674854897244
1978	12.34847902409361
1979	12.528243978976473
1980	12.709573532627596
1981	12.852468084048457
1982	12.968093483816862
1983	13.105054919177006
1984	13.251302347231046
1985	13.40258969689446
1986	13.557777185490414
1987	13.711800719518191
1988	13.875523775329365
1989	14.045455502497408
1990	14.226352055452452
1991	14.439026964238659
1992	14.639840900181706
1993	14.850625464002942
1994	15.081131750787895
1995	15.331898054851553
1996	15.6082134129776
1997	15.892793357630932
1998	16.19771817519807
1999	16.52607720535571
2000	16.886422590903727
2001	17.141141624785348
2002	17.343977617543295
2003	17.55417500169512
2004	17.768921912740876
2005	17.988054391699812
2006	18.219403776216808
2007	18.454295657893475
2008	18.715669947415886
2009	18.983260223142324
2010	19.24509049628163
2011	19.45815350810403
2012	19.65860809977155
2013	19.86659170375477
2014	20.08565733312334
2015	20.32515544783982
2016	20.573058019636612
2017	20.816382704045107
2018	21.07531133500162
2019	21.318404104974675
2020	21.576415543158674
2021	21.855039901431084
2022	22.165299071199264
2023	22.44354345923591