Year	% of total population
1960	41.4283615985176
1961	42.1488597789799
1962	42.6757292825698
1963	43.0083979795267
1964	43.2120866024431
1965	43.2659984948215
1966	43.0600534452876
1967	42.4932600787916
1968	41.5369060958489
1969	40.1951201251165
1970	38.4515375034374
1971	36.2500325219198
1972	33.8873484685496
1973	31.7829222777021
1974	29.9284212229052
1975	28.3187435581232
1976	26.9526332752913
1977	25.817252084982
1978	24.883102315194
1979	24.151430450175
1980	23.6856586177099
1981	23.46709825288
1982	23.4157601020676
1983	23.4895005877868
1984	23.6598443188679
1985	23.874306787788
1986	24.1135793730029
1987	24.4145827152971
1988	24.7514087990422
1989	25.1199101192876
1990	25.5291568040157
1991	25.9394217011759
1992	26.2854503389778
1993	26.4831073316479
1994	26.4966388402681
1995	26.3628823041491
1996	26.0787243041625
1997	25.5826154756078
1998	24.8951706879095
1999	24.0759497835579
2000	23.1038526680644
2001	21.9754419045277
2002	20.7644579853891
2003	19.5125536988712
2004	18.2315713325882
2005	17.0267631835848
2006	15.9629380557424
2007	14.9942755127782
2008	14.1458513888876
2009	13.4769189405198
2010	12.9455209699675
2011	12.6110545829006
2012	12.5767352790526
2013	12.6741420033082
2014	12.7583102023116
2015	12.8680073922492
2016	13.0301577258877
2017	13.2681343357203
2018	13.5929682591618
2019	13.9684548766109
2020	14.3349012173898
2021	14.6135999196047
2022	14.8182059457527
2023	14.9968863146249