Year	% of total population
1960	6.80434207042626
1961	6.43629778278107
1962	6.03804421845916
1963	5.68013851936315
1964	5.42159180457053
1965	5.26082949308756
1966	5.14574453457995
1967	5.07796373336721
1968	5.08211598700196
1969	5.12493902108515
1970	5.17610332066161
1971	5.22008301479727
1972	5.26673090399439
1973	5.33338799270297
1974	5.4302470916258
1975	5.57354510754536
1976	5.73506067899022
1977	5.90649132443698
1978	6.11540055566642
1979	6.37631070236073
1980	6.68192412456825
1981	7.00371747211896
1982	7.23094460852894
1983	7.38523941432529
1984	7.5817024454428
1985	7.83619991097821
1986	8.10227060926005
1987	8.37724362338617
1988	8.71220131105942
1989	9.08721206076861
1990	9.48487478882573
1991	9.76738312783555
1992	9.95225501235085
1993	10.1671850699844
1994	10.4002490292773
1995	10.6598863771801
1996	11.0269301219845
1997	11.4800098945611
1998	11.915993587531
1999	12.3273170360216
2000	12.7175763077272
2001	12.7580359775877
2002	12.475916921318
2003	12.23759429016
2004	12.0285701287476
2005	11.8383223406054
2006	11.7108469780168
2007	11.5929050704568
2008	11.4042469265663
2009	11.1506797378541
2010	10.8257188598914
2011	10.8059659191554
2012	11.1754972716071
2013	11.6252023007994
2014	12.1032092318647
2015	12.5882459527078
2016	12.9313969437762
2017	13.1845361034177
2018	13.5102348243983
2019	13.842788467836
2020	14.1949806949807
2021	14.5355163600476
2022	14.9679294447785
2023	15.5478973129558