Year	% of total population
1960	39.9755403797585
1961	40.3187296878108
1962	40.6390955864048
1963	40.9346586768414
1964	41.098225624613
1965	41.1397854429869
1966	41.1568502051594
1967	41.1426327608084
1968	41.0964010041195
1969	41.0213088001703
1970	40.9225497072701
1971	40.810884746772
1972	40.6847315277018
1973	40.5764342461652
1974	40.4843637738398
1975	40.3746311165902
1976	40.2556389342044
1977	40.1122223138447
1978	39.9387446578984
1979	39.7508002270261
1980	39.5382316043961
1981	39.3060823118433
1982	39.0837107076066
1983	38.8351059908475
1984	38.5514069704709
1985	38.2485400112109
1986	37.9087416712834
1987	37.5335355059415
1988	37.1266043339901
1989	36.7176951881718
1990	36.3244535419135
1991	35.9399297939385
1992	35.5544752094395
1993	35.1568967214425
1994	34.7360782861192
1995	34.2932584294294
1996	33.8371615062848
1997	33.3548299453115
1998	32.8380239681365
1999	32.3079761134786
2000	31.8089164969854
2001	31.3772619720435
2002	31.0217860367731
2003	30.7149284060604
2004	30.4032582734127
2005	30.0696174288698
2006	29.7273527666292
2007	29.3852420774279
2008	29.0189527137635
2009	28.6488255688547
2010	28.2996829300114
2011	27.9421913914767
2012	27.5823180387742
2013	27.233727245932
2014	26.9047485810154
2015	26.5972031399534
2016	26.2946029509534
2017	25.9791986898188
2018	25.6686114502609
2019	25.3854584894947
2020	25.1236148386325
2021	24.8818598736541
2022	24.6407161435401
2023	24.397562629497