Year	% of total population
1960	32.9034296758453
1961	34.3533949494214
1962	36.7376294591485
1963	38.7747696467324
1964	40.5144241604688
1965	41.9980621641026
1966	43.2414182755247
1967	44.2621390897722
1968	45.1132950219766
1969	45.8516030213188
1970	46.1479963394043
1971	46.0101481836771
1972	45.8508071998516
1973	45.7155155689204
1974	45.5879034078086
1975	45.4726136858928
1976	45.3609300846977
1977	45.2546539828791
1978	45.1545190133663
1979	45.0395979687952
1980	44.9099886842917
1981	44.7615206211556
1982	44.7387584648995
1983	44.8126878357907
1984	44.7902810607003
1985	44.918720159089
1986	45.1845291901639
1987	45.3561508825374
1988	45.484792119672
1989	45.6087769116476
1990	45.7321987984345
1991	45.7967729355562
1992	45.7699286896727
1993	45.6565664445866
1994	45.4643901244394
1995	45.2031530617612
1996	44.8817502076987
1997	44.4960626489219
1998	44.0236927666241
1999	43.4760380232427
2000	42.8912384709857
2001	42.5689534931423
2002	42.469876502838
2003	42.3399225423789
2004	42.2344749741593
2005	42.1565989714282
2006	42.1159816442349
2007	42.122353093565
2008	42.1571979873968
2009	42.1755703763586
2010	42.1341451697472
2011	42.0402108097794
2012	42.0796158473499
2013	42.2289259226763
2014	42.299883036198
2015	42.26880498798
2016	42.1225856107901
2017	41.8712581686387
2018	41.5374933757287
2019	41.1297349941053
2020	40.6138372949264
2021	40.0376500117656
2022	39.4705767230555
2023	38.9302820075435