Year	% of total population
1960	61.1633274639509
1961	61.3217995499959
1962	61.7060510859172
1963	62.1690767519466
1964	62.5847899817375
1965	62.9285805327782
1966	63.217160961928
1967	63.4772699523829
1968	63.7433197734705
1969	64.0165441176471
1970	64.3549890904197
1971	64.767125373532
1972	65.2554343189208
1973	65.8290033065659
1974	66.4300174191422
1975	67.0206173952231
1976	67.5675675675676
1977	68.0802485308979
1978	68.5739403688601
1979	69.0449243777651
1980	69.4536493386478
1981	69.7868551394068
1982	70.1047149324598
1983	70.4208892540857
1984	70.7055700995534
1985	70.976964988941
1986	71.2527904277168
1987	71.4835676586686
1988	71.6337680648573
1989	71.7015986412425
1990	71.6913172089786
1991	71.580502470885
1992	71.3944018174804
1993	71.2042152214438
1994	71.0293259348858
1995	70.8982519275883
1996	70.7840008021323
1997	70.671791721321
1998	70.5833821478958
1999	70.5140083467937
2000	70.4591745286862
2001	70.4127066366595
2002	70.3916188575705
2003	70.3837995757794
2004	70.384360978953
2005	70.4471993456007
2006	70.6105690348047
2007	70.7460157864319
2008	70.7354859107616
2009	70.6598688312406
2010	70.4595961984018
2011	70.099790659972
2012	69.7225478087806
2013	69.3769092684156
2014	69.1192486780838
2015	68.9131192195616
2016	68.5593327836621
2017	67.9723429474516
2018	67.3192178823677
2019	66.6940911904594
2020	66.048211399255
2021	65.4202695333801
2022	64.8853296771781
2023	64.4203905164744