Year	% of total population
1960	10.697620381452
1961	10.8428330916936
1962	10.9555356852544
1963	11.0654291251556
1964	11.2386955036332
1965	11.4231914467819
1966	11.612566246561
1967	11.84067207157
1968	12.0556065706067
1969	12.2570422639301
1970	12.4888755297016
1971	12.6393943337218
1972	12.7414365774338
1973	12.8974242953612
1974	13.038900130056
1975	13.1485453103418
1976	13.2045384937438
1977	13.2730802349648
1978	13.3637891926474
1979	13.4786957336361
1980	13.5658339312863
1981	13.5117004551777
1982	13.4003616240206
1983	13.2520889173477
1984	13.1441209799893
1985	13.186352894948
1986	13.2601787217861
1987	13.2680118695964
1988	13.26935024315
1989	13.2698322584753
1990	13.2802121350814
1991	13.3503365049295
1992	13.4361047824355
1993	13.5260494457364
1994	13.6488962015304
1995	13.7891572250209
1996	13.9304915398419
1997	14.0131186642815
1998	14.0340460392352
1999	14.0468640277071
2000	13.9325295894662
2001	13.846701242721
2002	13.9245928293107
2003	13.9430133720615
2004	13.9662748190485
2005	14.0089639987996
2006	13.9968268651693
2007	13.9772666886866
2008	13.9603037437927
2009	13.9584186973254
2010	13.9289584563852
2011	13.8917727699023
2012	13.901649972813
2013	13.9751098164034
2014	14.0886166207641
2015	14.1728024305967
2016	14.2188836566664
2017	14.2763706800049
2018	14.3515601739065
2019	14.4442580563992
2020	14.5581492371108
2021	14.7450967510844
2022	15.0285130149985
2023	15.3535415242815