Year	% of total population
1960	3.06
1961	3.097
1962	3.134
1963	3.171
1964	3.318
1965	3.839
1966	4.437
1967	5.124
1968	5.912
1969	6.81
1970	7.834
1971	8.998
1972	9.695
1973	10.381
1974	11.11
1975	11.884
1976	12.705
1977	13.572
1978	14.489
1979	15.457
1980	16.479
1981	17.552
1982	19.489
1983	21.723
1984	24.139
1985	26.724
1986	29.483
1987	32.401
1988	35.467
1989	38.648
1990	41.933
1991	45.292
1992	46.443
1993	47.286
1994	48.133
1995	48.981
1996	49.83
1997	50.677
1998	51.525
1999	52.372
2000	53.219
2001	54.062
2002	54.57
2003	55.029
2004	55.488
2005	55.944
2006	56.4
2007	57.928
2008	59.444
2009	60.937
2010	62.412
2011	63.865
2012	64.768
2013	65.572
2014	66.368
2015	67.155
2016	67.933
2017	68.7
2018	69.446
2019	70.172
2020	70.877
2021	71.56
2022	72.224
2023	72.867