Year	% of total population
1960	11.259528122614883
1961	11.550121794274505
1962	11.81677004415176
1963	12.08161167601452
1964	12.345313569678089
1965	12.60664933619173
1966	12.866662403461811
1967	13.12416834528368
1968	13.382489787080182
1969	13.64135374696986
1970	13.902691463198586
1971	14.186690104718094
1972	14.478411423915686
1973	14.703934428636797
1974	14.915272782943049
1975	15.11936112142559
1976	15.315773366669266
1977	15.505273522053253
1978	15.69152043479999
1979	15.841746844139756
1980	15.897583769568927
1981	15.83938650105526
1982	15.710136737634079
1983	15.660205032979006
1984	15.685969599527219
1985	15.694349694906029
1986	15.66064331912326
1987	15.625804517944001
1988	15.598791558649161
1989	15.59110487896048
1990	15.595985096063114
1991	15.611551865531812
1992	15.722913876187262
1993	15.844549054548384
1994	15.913164827034617
1995	15.97456745649234
1996	16.022153562933486
1997	16.085654179086777
1998	16.136015491093776
1999	16.147272034686228
2000	16.124989476577056
2001	16.099619359595554
2002	16.169820600965167
2003	16.29315971530594
2004	16.41147522904082
2005	16.54286685247086
2006	16.686898786939857
2007	16.825857136652843
2008	16.961257143776066
2009	17.088690512514038
2010	17.214703359548928
2011	17.367206186251067
2012	17.57766803801993
2013	17.836710265411647
2014	18.124470076171505
2015	18.438666843362203
2016	18.77751553402405
2017	19.098375029759616
2018	19.385260224821952
2019	19.600008114888187
2020	19.78956159410755
2021	19.956549057846345
2022	20.10756779325498
2023	20.240737183587058