Year	% of total population
1960	39.9033831955581
1961	40.158925188169
1962	40.418777137702
1963	40.6983732529901
1964	40.908713311606
1965	41.0316187546693
1966	41.1595290898762
1967	41.3069761865364
1968	41.4741622294815
1969	41.6553096953331
1970	41.8585280284266
1971	42.1015823289197
1972	42.3670728289918
1973	42.6206410066371
1974	42.8462179113609
1975	43.0406926315946
1976	43.1577262866217
1977	43.2215003233281
1978	43.3018436091611
1979	43.402507228609
1980	43.5204803758412
1981	43.6515622631616
1982	43.7907462427089
1983	43.9306279614324
1984	44.0813056906613
1985	44.2617910288164
1986	44.4729809467724
1987	44.7197271441975
1988	44.9898569358482
1989	45.2494558771327
1990	45.5038959199009
1991	45.7338333242755
1992	45.8916462144363
1993	45.9771082363864
1994	46.0043371005608
1995	46.0371565167646
1996	46.0551735209911
1997	46.0141279174919
1998	45.9448755275398
1999	45.8526383174297
2000	45.7406023138086
2001	45.6715579400342
2002	45.5811484518583
2003	45.512903847842
2004	45.5243663760486
2005	45.5093684486762
2006	45.5922866136397
2007	45.7354689184424
2008	45.8215969482675
2009	45.8967606812516
2010	46.0144779034293
2011	46.3340512787134
2012	46.887183315629
2013	47.4916909226238
2014	48.2683403301433
2015	48.7530120869423
2016	48.6967692339847
2017	48.6383524781453
2018	48.5802821711634
2019	48.4336020917875
2020	48.2084382989396
2021	48.1835084566508
2022	48.1349153324341
2023	47.8358773564427