Year	% of total population
1960	55.3763522663299
1961	57.3718498199897
1962	57.6621439889219
1963	57.9866371923201
1964	58.2483732906503
1965	58.3896895188298
1966	58.5845070422535
1967	58.9216848204376
1968	59.3782291896666
1969	59.9693392099848
1970	59.9672159570025
1971	59.2619909704528
1972	58.6068030665284
1973	58.2155435548251
1974	58.0584565871047
1975	57.9259787264113
1976	57.7645433940882
1977	57.7648716841316
1978	58.1009693186244
1979	58.7516514301783
1980	59.5514279801325
1981	60.3727929414881
1982	61.0939802914531
1983	61.6613704515956
1984	62.1763624444893
1985	62.7253771617809
1986	63.2471839554143
1987	63.6499217388736
1988	63.858078872543
1989	63.8716561615961
1990	63.7875552465611
1991	63.5511426944314
1992	63.190032993549
1993	62.8455905388471
1994	62.5904852836586
1995	62.8117946710358
1996	63.3717540690617
1997	63.8762584487404
1998	64.3842666454568
1999	64.8979383642316
2000	65.2382492951888
2001	65.4334018480455
2002	65.6474093877494
2003	65.861046901797
2004	66.040396091547
2005	66.2118124360215
2006	66.354815541546
2007	66.3705970997075
2008	66.2501643470258
2009	65.98006894155
2010	65.6229390816077
2011	65.2292625581274
2012	64.7867294054766
2013	64.2958734551884
2014	63.77789385102
2015	63.2619511981596
2016	62.7681045393904
2017	62.3047392760012
2018	61.8717598370238
2019	61.4719344616743
2020	61.0911715658212
2021	60.7522154839096
2022	60.4031568893581
2023	60.0207594936709