Year	% of total population
1960	38.4826547750043
1961	39.06019391022
1962	39.6573194867575
1963	40.2869637107301
1964	40.9452921473763
1965	41.6027679072377
1966	42.2185699212726
1967	42.765671080498
1968	43.2191939468808
1969	43.550604542544
1970	43.7181632615532
1971	43.6240887707832
1972	43.2500175278693
1973	42.7903151184907
1974	42.3223360896328
1975	41.8049801041966
1976	41.1685241472476
1977	40.4260203273913
1978	39.7550720560193
1979	39.1430758643087
1980	38.5789445469792
1981	38.0706810253299
1982	37.478738616693
1983	36.8756403449075
1984	36.3948861105337
1985	35.9824864004246
1986	35.593381583473
1987	35.1926440385215
1988	34.6623937458235
1989	34.0078899669474
1990	33.2789169258483
1991	32.6646086950462
1992	32.2085974287805
1993	31.6434033173376
1994	31.1379840342336
1995	30.6723757275707
1996	30.1131700860357
1997	29.8674402043603
1998	29.6398588792748
1999	29.0988545406112
2000	28.5791906070447
2001	28.104772218257
2002	27.6459206511916
2003	27.1886065652216
2004	26.6967284231153
2005	26.2787746119721
2006	25.8717692581493
2007	25.4850013303217
2008	25.1399982151622
2009	24.7270130726134
2010	24.2667070669906
2011	23.8215012736206
2012	23.5707016126494
2013	23.476435676324
2014	23.3895572494158
2015	23.326279725917
2016	23.3303650934996
2017	23.368414849156
2018	23.3644678519122
2019	23.3231933699011
2020	23.2379418174927
2021	23.1552401839007
2022	23.103385502971
2023	22.9871818688464