Year	% of total population
1960	3.71872825998572
1961	3.83056271668593
1962	3.99856160538872
1963	4.19280861927221
1964	4.37065321150961
1965	4.50593945693999
1966	4.60525773110838
1967	4.67322329876495
1968	4.71527977273453
1969	4.74412475291017
1970	4.86689657844771
1971	5.11205292696295
1972	5.40536362933766
1973	5.73041900004654
1974	6.06921789231907
1975	6.40743343484032
1976	6.73537478219423
1977	7.04259400782944
1978	7.33500703420723
1979	7.61354930078859
1980	7.88340178303115
1981	8.15348090324464
1982	8.40711017085566
1983	8.64420254403131
1984	8.84924611583271
1985	9.00950067642356
1986	9.1312981463882
1987	9.20399362884115
1988	9.2205620330718
1989	9.18669610516143
1990	9.10102956038403
1991	8.96926171543515
1992	8.79227949705377
1993	8.58605421252098
1994	8.37756440839695
1995	8.16909851165239
1996	7.95080088254678
1997	7.72913960754028
1998	7.5311414870749
1999	7.37662724698934
2000	7.25867697022184
2001	7.17444072689103
2002	7.11704125914891
2003	7.06376601835426
2004	7.01663267503579
2005	6.98831837133306
2006	6.97381189312137
2007	6.96758539544354
2008	6.97649277486156
2009	7.00846410003135
2010	7.10018087402999
2011	7.24555800251358
2012	7.4092661450373
2013	7.5861328632609
2014	7.79618091353265
2015	8.06366431140587
2016	8.40119472861883
2017	8.75613209100188
2018	9.08589857626971
2019	9.42882111239572
2020	9.80477855477855
2021	10.1926099153074
2022	10.6182609344838
2023	11.1174150034995