Year	% of total population
1960	38.62996602107862
1961	38.06910305667832
1962	37.50405846029361
1963	36.92508308727256
1964	36.34743688323779
1965	35.77231087686104
1966	35.208103514647725
1967	34.63714536274445
1968	34.08063834460529
1969	33.54999042077132
1970	33.03699640219809
1971	32.57312009673722
1972	32.14076661036967
1973	31.71713410470562
1974	31.297629307246105
1975	30.892858442998588
1976	30.538469892540846
1977	30.18866420340691
1978	29.834020563275487
1979	29.49689804703931
1980	29.17834716788879
1981	28.843343946401344
1982	28.54493112031913
1983	28.26366784798359
1984	27.994553101571146
1985	27.73064077995287
1986	27.442747766169514
1987	27.132357051125837
1988	26.832009364793496
1989	26.58036721115845
1990	26.35407877372049
1991	26.10340796056046
1992	25.866572685155077
1993	25.649299034421556
1994	25.431139191670386
1995	25.213650674537536
1996	25.0039392013714
1997	24.80459484149292
1998	24.6068666666612
1999	24.409862545968245
2000	24.215495514456695
2001	23.914017030927177
2002	23.56311113628713
2003	23.22991212470462
2004	22.9059940602776
2005	22.591698633875716
2006	22.297845972858934
2007	22.01300656438032
2008	21.736106673327868
2009	21.473973261066558
2010	21.222536937066142
2011	21.031555749949657
2012	20.866768980154024
2013	20.704774387507204
2014	20.542526501581282
2015	20.372565159355503
2016	20.197678636870368
2017	20.019260291283377
2018	19.836640979747326
2019	19.644973466204846
2020	19.456378887801865
2021	19.270403877374505
2022	19.05917919665578
2023	18.852923967274428