Year	% of total population
1960	37.8552885781044
1961	37.4214021465168
1962	37.0462390516649
1963	36.9510339103418
1964	37.0593023739116
1965	37.1754049650441
1966	37.7412257082093
1967	38.7970792268719
1968	39.6549912231062
1969	40.1504065494317
1970	40.4068806583023
1971	40.543608346205
1972	40.4413761910479
1973	39.9647324107316
1974	39.4209436909193
1975	38.9158849008554
1976	38.3568599125104
1977	37.7169159143236
1978	36.9113159272347
1979	36.0457475100981
1980	35.1877627752915
1981	34.2713523471977
1982	33.1955344603972
1983	32.0657402448613
1984	31.0095864806344
1985	29.9947240656859
1986	29.064683910774
1987	28.1639928430081
1988	27.4286991532377
1989	26.9692598409107
1990	26.6568462493864
1991	26.500057410342
1992	26.4712704403654
1993	26.4826143864815
1994	26.4904728744103
1995	26.4479969019282
1996	26.3416709237355
1997	26.197572099076
1998	26.0275158102743
1999	25.8305873678152
2000	25.5897773530298
2001	25.3061028502174
2002	24.9867223517419
2003	24.6503147282555
2004	24.3166751082407
2005	23.9525115615621
2006	23.534649891951
2007	23.0853431933135
2008	22.6329554232333
2009	22.1881943862763
2010	21.719790206245
2011	21.2387355049154
2012	20.8054638884882
2013	20.4290755804608
2014	20.1023110163678
2015	19.8277279509098
2016	19.5888723935156
2017	19.3871440285779
2018	19.2320393482377
2019	19.1085122384142
2020	19.0133633880735
2021	18.9482875517545
2022	18.8979450307221
2023	18.8450924601125