Year	% of total population
1960	42.7143135520813
1961	44.10926062531919
1962	45.66454187013441
1963	47.420480745958756
1964	49.420767671879254
1965	51.65624262789347
1966	54.16116465489373
1967	56.96380430920984
1968	57.16586603740016
1969	55.74249489656915
1970	54.78657022852619
1971	54.85134087828326
1972	55.75505647759247
1973	57.350083570001765
1974	59.610736754377946
1975	62.51688461779115
1976	62.856961429685576
1977	60.88594504435808
1978	59.65344106225419
1979	59.073566902819294
1980	59.19423932594907
1981	58.99652784089876
1982	58.404289569946975
1983	57.930124469525815
1984	57.61386071261783
1985	57.45366558031107
1986	56.8307145721684
1987	55.84605456279519
1988	55.12950493591126
1989	54.63629565139745
1990	54.35489074289359
1991	54.26320577300247
1992	54.35295107197655
1993	54.60561943503394
1994	55.031592632793824
1995	55.60278029308279
1996	55.8820088349558
1997	55.88996689509814
1998	56.10058436290066
1999	56.49408906291817
2000	57.06256432552049
2001	57.78351443663623
2002	58.67199830473724
2003	59.72002203782776
2004	60.9315913324664
2005	60.720538435825524
2006	56.81765944321992
2007	50.84069744632041
2008	45.83440232318383
2009	42.99318223106146
2010	43.470249314677325
2011	45.46718125106047
2012	47.58849108404197
2013	49.82627095743333
2014	52.1983881531258
2015	54.711531441591966
2016	57.37724147047957
2017	60.20358179750639
2018	63.19274840541789
2019	64.20199970537331
2020	65.0976727438976
2021	65.88198047120466
2022	66.62228638121563
2023	67.30615556310472