Year	% of total population
1960	57.1297329855797
1961	56.7342764805745
1962	56.4103784795187
1963	56.1149259867853
1964	55.7112232459218
1965	55.3068754415026
1966	54.9561717996837
1967	54.6058363162046
1968	54.2609604643562
1969	53.9288082272496
1970	53.609258573796
1971	53.3000369680189
1972	53.0103781227566
1973	52.7454431459154
1974	52.5060855589947
1975	52.2939796219424
1976	52.0571424623035
1977	51.7927425586697
1978	51.5927437444771
1979	51.4255475289768
1980	51.4143812746911
1981	51.472463395827
1982	51.1009688751591
1983	50.6353028565078
1984	50.4747006923911
1985	50.3925005210748
1986	50.3149797996818
1987	50.2375740548517
1988	50.1501778927472
1989	50.0700139288401
1990	50.0223699359259
1991	49.9977223943905
1992	50.0027847391676
1993	50.053993133374
1994	50.1495560404666
1995	50.288849289992
1996	50.4860013096557
1997	50.7390299286696
1998	50.9964355619195
1999	51.2211737513907
2000	51.4377324410618
2001	51.6761489662629
2002	51.9307236575417
2003	52.1616451818314
2004	52.3545119705889
2005	52.5209519639763
2006	52.6675053830466
2007	52.8141999289278
2008	52.9569425620521
2009	53.0784076047578
2010	53.1779584970578
2011	53.257886143652
2012	53.3354278512433
2013	53.4353402348743
2014	53.6487517592816
2015	53.8921827178808
2016	54.0428325678159
2017	54.1404982371816
2018	54.2590602812051
2019	54.4335675336852
2020	54.6378496027334
2021	54.8678484811807
2022	55.1207074493248
2023	55.3958588687594