Year	% of total population
1960	31.1162718095194
1961	30.978751758437
1962	30.8310830744831
1963	30.6841967032698
1964	30.5438191063246
1965	30.402439758188
1966	30.2487229901412
1967	30.0925866217024
1968	29.9432253862993
1969	29.8161241116447
1970	29.7172637318956
1971	29.6564488381245
1972	29.6308497117393
1973	29.6526490435127
1974	29.7392986639616
1975	29.8600839862065
1976	30.0064544823582
1977	30.1667697345714
1978	30.3256586825057
1979	30.4869114252418
1980	30.6423461860258
1981	30.77572543705
1982	30.8801489982181
1983	30.9572559776673
1984	31.0037490701741
1985	31.0110765925784
1986	30.9722416925682
1987	30.890024070159
1988	30.7641438755437
1989	30.5949084283413
1990	30.4039445969413
1991	30.1980957212797
1992	29.9729814917119
1993	29.7415810060055
1994	29.5108852477345
1995	29.2814736747524
1996	29.0505618609344
1997	28.8213354430812
1998	28.5985102887007
1999	28.3864423108692
2000	28.1802131806071
2001	27.9635039480871
2002	27.7328473929068
2003	27.4942108965076
2004	27.2480435226372
2005	26.9902147785386
2006	26.7224838516436
2007	26.4535033713104
2008	26.1772159938644
2009	25.8961479735009
2010	25.6397444358013
2011	25.4191748509299
2012	25.2279686735182
2013	25.0575117846874
2014	24.8909505962578
2015	24.7292121561043
2016	24.5763205280432
2017	24.4068430876801
2018	24.1931513494201
2019	23.9395441152544
2020	23.6563980592251
2021	23.3567371619625
2022	23.0533315543961
2023	22.7340998635816