Year	% of total population
1960	39.592336873553
1961	39.62276939817
1962	39.5978315178197
1963	39.5216373740015
1964	39.4102648303476
1965	39.253929141134
1966	39.0554397436837
1967	38.839362111404
1968	38.6102852846683
1969	38.3571386925778
1970	38.0529966886043
1971	37.6904068380828
1972	37.2937427586781
1973	36.8699675450982
1974	36.4083316090159
1975	35.9170453997007
1976	35.4173722706574
1977	34.9115651926476
1978	34.4047722032869
1979	33.9015831145418
1980	33.4045535205692
1981	32.928707115454
1982	32.4736160352206
1983	32.0386200891695
1984	31.635302580114
1985	31.2664030616249
1986	30.9308872218807
1987	30.6255026436381
1988	30.3496589241894
1989	30.1078403641632
1990	29.8944499788201
1991	29.6924360889077
1992	29.4719124105365
1993	29.2270087422936
1994	28.9708250291295
1995	28.6961402519672
1996	28.3957235075886
1997	28.0628327261356
1998	27.6911811912214
1999	27.2756229149179
2000	26.8125653160442
2001	26.3160020480575
2002	25.7942727664892
2003	25.239386834502
2004	24.6478867743847
2005	24.0338902911975
2006	23.4221497474575
2007	22.8567197124241
2008	22.3523188527009
2009	21.8914432676801
2010	21.4798441699156
2011	21.1091599866842
2012	20.771601124245
2013	20.4724440702186
2014	20.2099150409439
2015	19.9743101950496
2016	19.7226070877104
2017	19.4177371496986
2018	19.1026198743247
2019	18.8264646121871
2020	18.6188701743694
2021	18.4569535059805
2022	18.3186998108983
2023	18.177371509033