Year	% of total population
1960	7.99906306728348
1961	8.09180839986116
1962	8.18436633012041
1963	8.2732796382648
1964	8.33961105995926
1965	8.40383530738861
1966	8.47114731839783
1967	8.525695255744
1968	8.56353224113419
1969	8.60946317464911
1970	8.68139162577605
1971	8.75673867452363
1972	8.83752289843273
1973	8.93789390260778
1974	9.05596058623006
1975	9.1837739378723
1976	9.31688365465418
1977	9.45975265784335
1978	9.64006147907209
1979	9.83861101962076
1980	10.0559762159149
1981	10.3134386536125
1982	10.5616501941605
1983	10.8029148057356
1984	11.0457516339869
1985	11.2605595172792
1986	11.4374823411793
1987	11.5865007046572
1988	11.6813424333734
1989	11.7150979153506
1990	11.8852545335833
1991	12.2258894906057
1992	12.5789307800154
1993	12.9523682810005
1994	13.3658879245882
1995	13.6399954343112
1996	13.6809551860075
1997	13.678911350586
1998	13.659868494372
1999	13.6117778490604
2000	13.5711078745935
2001	13.5117309979457
2002	13.4278939610792
2003	13.36632096473
2004	13.3292351292497
2005	13.3449986022385
2006	13.4684246476104
2007	13.7278620390186
2008	14.0947915268066
2009	14.4798108590838
2010	14.7892997314604
2011	15.063397092104
2012	15.4510606201502
2013	15.9424181089677
2014	16.5172445810851
2015	17.0024479428062
2016	17.3111111111111
2017	17.5172454982531
2018	17.6233931900697
2019	17.6873512509433
2020	17.8078794238291
2021	17.9027576883443
2022	17.9093794441462
2023	17.9530500567867