Year	% of total population
1960	8.86000838293169
1961	8.968200264743231
1962	9.068372762886886
1963	9.163432792079105
1964	9.272138320225535
1965	9.396319724827624
1966	9.53140441377449
1967	9.681044512170137
1968	9.819886904371787
1969	9.940812246408687
1970	10.072518251000881
1971	10.206312844941205
1972	10.357616134781615
1973	10.521176643883516
1974	10.69071052793907
1975	10.866541223080876
1976	11.047951060310615
1977	11.240658881001924
1978	11.428991886033822
1979	11.590989506992287
1980	11.69032280443985
1981	11.714774977911308
1982	11.701752625311578
1983	11.673621151170604
1984	11.699892629255494
1985	11.829066339572071
1986	12.005370387301754
1987	12.180815304289606
1988	12.375349368795861
1989	12.564777542418824
1990	12.733198733645143
1991	12.918601769409197
1992	13.112526436559218
1993	13.296829030262614
1994	13.490615898321817
1995	13.689715470398047
1996	13.866666292240234
1997	14.019921658022543
1998	14.157959824411043
1999	14.29090787315118
2000	14.441884999742085
2001	14.632153557731412
2002	14.830889696220893
2003	15.01780384467281
2004	15.21002880132227
2005	15.421125808297028
2006	15.63047590763633
2007	15.819234669292596
2008	16.00871126393743
2009	16.211783785509155
2010	16.39091574134982
2011	16.608337043386754
2012	16.93907475267576
2013	17.316879105709845
2014	17.68601884810452
2015	18.01166395893778
2016	18.346558605794907
2017	18.686680108466874
2018	19.002715432494433
2019	19.341118666256925
2020	19.682309463636162
2021	20.026855709213148
2022	20.42649472238178
2023	20.837801922173554