Year	% of total population
1960	41.401699209716945
1961	41.670170607469565
1962	41.92365027657618
1963	42.17203594000581
1964	42.34907048272484
1965	42.430903375680494
1966	42.47601743017369
1967	42.490107152716966
1968	42.47699522844839
1969	42.442505068990975
1970	42.384674342646626
1971	42.326671677071474
1972	42.25576289619334
1973	42.16227126368162
1974	42.060163846960705
1975	41.93826856569665
1976	41.81054454623085
1977	41.675888780838505
1978	41.53397702214627
1979	41.408340553012785
1980	41.2951005682001
1981	41.199500704560364
1982	41.12287429915053
1983	41.05172493491228
1984	40.986045944785815
1985	40.91001305630049
1986	40.81392382457143
1987	40.6956720604213
1988	40.54699008194365
1989	40.3788737108481
1990	40.206582902642815
1991	40.007626499368826
1992	39.806104175375914
1993	39.586742846777334
1994	39.33312555501229
1995	39.045841561960884
1996	38.72023502542611
1997	38.37066463673164
1998	38.00025776148331
1999	37.61932975163897
2000	37.245278634314836
2001	36.883265765755986
2002	36.537608005983216
2003	36.1983134137034
2004	35.85368192990377
2005	35.50996067197898
2006	35.16872257164102
2007	34.827940473892646
2008	34.498304042420195
2009	34.17724853469042
2010	33.85756340955242
2011	33.54661801394388
2012	33.24649970849329
2013	32.94940957845451
2014	32.641684938284335
2015	32.323473529830544
2016	31.99281632369713
2017	31.645203744916575
2018	31.298936027080316
2019	30.95874648311717
2020	30.619364275965804
2021	30.308128077185337
2022	30.01570599056003
2023	29.69752669682018