Year	% of total population
1960	31.4476760042077
1961	31.8238534724616
1962	32.2079337484831
1963	32.6278840087722
1964	33.0653474847151
1965	33.4732939446793
1966	33.8747058019102
1967	34.291252056258
1968	34.7173432866525
1969	35.0986439239995
1970	35.4522498626907
1971	35.8501443758216
1972	36.2856837533013
1973	36.7329463172608
1974	37.1678722558335
1975	37.5884161968221
1976	38.0000751480306
1977	38.4042720818844
1978	38.8052124948219
1979	39.2030129247625
1980	39.5961838445503
1981	39.9865002740913
1982	40.3692446031776
1983	40.7361744596988
1984	41.0798555824995
1985	41.3910383457922
1986	41.6643806167961
1987	41.9038768906423
1988	42.1143107094955
1989	42.2901405005076
1990	42.4226687452793
1991	42.5075371660256
1992	42.5435155179161
1993	42.5278806221756
1994	42.4539438612084
1995	42.3116517107501
1996	42.1006934636768
1997	41.8456085152983
1998	41.5630434638859
1999	41.2557338640814
2000	40.9316425943362
2001	40.5913867395281
2002	40.230611107136
2003	39.8512402989704
2004	39.4643815456745
2005	39.0792215602121
2006	38.6956505823993
2007	38.3204384382621
2008	37.9666470413968
2009	37.6588673462384
2010	37.4096563331882
2011	37.2097038081805
2012	37.0319675723646
2013	36.8644848549844
2014	36.7359981452628
2015	36.6597371380176
2016	36.630595595688
2017	36.6317784353959
2018	36.6293698732876
2019	36.5971021303642
2020	36.5273646684315
2021	36.4232081357299
2022	36.2841239560191
2023	36.089246897222