Year	% of total population
1960	62.7675628683625
1961	62.8261052945822
1962	62.7302175064514
1963	62.6563955552173
1964	62.5857750856263
1965	62.3306098156199
1966	62.0299358905867
1967	61.8359714478661
1968	61.6698525283745
1969	61.5579270931808
1970	61.6423324734588
1971	61.7659395816468
1972	61.8198580230687
1973	61.9417590612148
1974	62.0835865795241
1975	62.1166094742651
1976	62.0961521673623
1977	62.1334111851394
1978	62.2490546425703
1979	62.4526483793376
1980	62.7170441148089
1981	63.0318993518352
1982	63.3339941491799
1983	63.6479628907238
1984	63.9793814805061
1985	64.2605997031778
1986	64.524697484909
1987	64.8298310508364
1988	65.1539411631487
1989	65.4887279236595
1990	65.8892277732778
1991	66.3145249664407
1992	66.637162284009
1993	66.8319822163563
1994	66.9915551389986
1995	67.1413456746194
1996	67.2518709768236
1997	67.3190860633515
1998	67.3495496868165
1999	67.3702033025487
2000	67.367428317824
2001	67.280503063156
2002	67.1334730174879
2003	66.9832608851223
2004	66.8172432529304
2005	66.6793527837641
2006	66.6078588316054
2007	66.5699545627105
2008	66.5004845259558
2009	66.3690194907294
2010	66.2334992790696
2011	66.0820253925621
2012	65.8912310733822
2013	65.6504087377031
2014	65.4038643123055
2015	65.2120694784122
2016	64.9882175640896
2017	64.7310024807107
2018	64.5231774853533
2019	64.3508605457981
2020	64.2076135406882
2021	64.0960299425574
2022	63.9204195557044
2023	63.6801184276716