Year	% of total population
1960	38.0675281699719
1961	38.8942384691281
1962	39.6678323434408
1963	40.5649289540031
1964	41.6150294787127
1965	42.6330327205712
1966	43.5595747272562
1967	44.3452120143849
1968	44.921775788551
1969	45.2541313128672
1970	45.4445332814995
1971	45.5938893537413
1972	45.6867415461762
1973	45.7072035147758
1974	45.6505839215511
1975	45.4976352762333
1976	45.2502461440162
1977	44.9151232801447
1978	44.5039446291405
1979	44.05649528673
1980	43.6431693152234
1981	43.2987814659552
1982	43.0023173234661
1983	42.7424282050475
1984	42.5146875594395
1985	42.3275036482738
1986	42.1872398360942
1987	42.0632139031309
1988	41.912197634165
1989	41.6782953987942
1990	41.3587652265881
1991	40.9958017368941
1992	40.5829929753876
1993	40.1045407205135
1994	39.5571299805063
1995	38.9581147934405
1996	38.3346563242857
1997	37.6832748229627
1998	36.9650564195932
1999	36.1669969476886
2000	35.2045580144591
2001	34.1162605693357
2002	33.0335813005401
2003	31.9530044962087
2004	30.891065974927
2005	29.8985251567351
2006	29.0662595758166
2007	28.4804173096621
2008	28.1539549430262
2009	28.060917702977
2010	28.0901528943357
2011	28.1183882650388
2012	28.2124476560774
2013	28.4528936663698
2014	28.8188306381117
2015	29.2864976573898
2016	29.8366145913533
2017	30.4513409836696
2018	31.1069784964622
2019	31.748055139331
2020	32.2020073854056
2021	32.431183925479
2022	32.4651170591985
2023	32.2517849131596