Year	% of total population
1960	4.7
1961	4.796
1962	4.893
1963	4.993
1964	5.095
1965	5.198
1966	5.303
1967	5.411
1968	5.52
1969	5.632
1970	5.746
1971	5.861
1972	5.98
1973	6.1
1974	6.222
1975	6.347
1976	6.668
1977	7.151
1978	7.668
1979	8.218
1980	8.805
1981	9.428
1982	10.091
1983	10.796
1984	11.544
1985	12.334
1986	12.832
1987	13.072
1988	13.316
1989	13.563
1990	13.815
1991	14.07
1992	14.33
1993	14.593
1994	14.86
1995	15.131
1996	15.407
1997	15.875
1998	16.51
1999	17.166
2000	17.844
2001	18.54
2002	19.258
2003	19.996
2004	20.757
2005	21.537
2006	22.339
2007	22.996
2008	23.534
2009	24.079
2010	24.633
2011	25.196
2012	25.767
2013	26.346
2014	26.934
2015	27.53
2016	28.134
2017	28.743
2018	29.358
2019	29.98
2020	30.607
2021	31.24
2022	31.877
2023	32.52