Year	% of total population
1960	10.209646856256395
1961	10.353281073355223
1962	10.501888295425548
1963	10.626868926325097
1964	10.773653899839104
1965	10.956806997476718
1966	11.155938801406846
1967	11.358990372955969
1968	11.544716405802834
1969	11.719628051437502
1970	11.91201037358217
1971	12.105468177159949
1972	12.291837801528503
1973	12.477049071959387
1974	12.658751245521973
1975	12.831793057320514
1976	12.988331210065683
1977	13.157340521925034
1978	13.336364889719668
1979	13.492288377051413
1980	13.53876074478447
1981	13.434061964546927
1982	13.262565669600098
1983	13.075350406121302
1984	12.971737107753443
1985	13.06813621989883
1986	13.285637627213424
1987	13.505940275130817
1988	13.71874037936616
1989	13.922141966872216
1990	14.126901091232376
1991	14.338089896206384
1992	14.550776557038823
1993	14.768451430501786
1994	14.995254766126308
1995	15.242485223916235
1996	15.483254122278831
1997	15.696281490419542
1998	15.893065780025477
1999	16.098785208778192
2000	16.337200808959352
2001	16.590968446662206
2002	16.825137416669694
2003	17.033152085327053
2004	17.263585505979528
2005	17.526407880583697
2006	17.75631350762126
2007	17.903920104723458
2008	18.034971717598427
2009	18.201279539882947
2010	18.341953244322024
2011	18.524583367347873
2012	18.81584352148953
2013	19.143599177724692
2014	19.490725037162257
2015	19.80665485563903
2016	20.089825410793274
2017	20.361888131988668
2018	20.62866527562769
2019	20.905594325573887
2020	21.17928436382482
2021	21.445936762745777
2022	21.754258345237428
2023	22.119688638254633