Year	% of total population
1960	38.7490602241997
1961	39.0111050508056
1962	39.2497026919889
1963	39.4633910210658
1964	39.5257779070251
1965	39.4529667688668
1966	39.3876630505079
1967	39.3468645216523
1968	39.3592949485371
1969	39.5060624878468
1970	39.7572210566169
1971	39.9994870997575
1972	40.2060505236408
1973	40.4003683939467
1974	40.6121314640597
1975	40.8569466729506
1976	41.1565962981817
1977	41.438478574087
1978	41.6622210572367
1979	41.8817194487542
1980	42.0760791268227
1981	42.2414547903687
1982	42.3977247174108
1983	41.9504133703941
1984	41.1415538506877
1985	40.7161866805505
1986	40.6263411662688
1987	40.7777582220465
1988	41.0542266729844
1989	41.3724202448823
1990	41.6978663900041
1991	42.0135881235867
1992	42.3072818647031
1993	42.5690455870028
1994	42.7770226225574
1995	42.9122740376342
1996	42.9818237371111
1997	42.9947817758475
1998	42.9609168315511
1999	42.8435556620819
2000	42.7380043417516
2001	42.5698676645295
2002	42.1707947920445
2003	41.6063575038528
2004	40.9564896442812
2005	40.3126306410177
2006	39.7580674108906
2007	39.3395126233842
2008	39.0644857666777
2009	38.9173084625069
2010	38.8694816790305
2011	38.7969295501962
2012	38.6917111630812
2013	38.6412619248019
2014	38.6381692780094
2015	38.6803595914692
2016	38.7681554391885
2017	38.8649501548914
2018	38.9142405772218
2019	38.8737053135788
2020	38.8558367743837
2021	38.7664040629796
2022	38.4912186221572
2023	38.1225500044761