Year	% of total population
1960	40.7424807784393
1961	40.701395679616
1962	40.7451585742352
1963	40.8281770585436
1964	41.2655120687304
1965	41.9475718225791
1966	42.5361499946383
1967	43.0984955450606
1968	43.6025726962239
1969	43.9976781400019
1970	43.7826946177394
1971	43.0201409635857
1972	42.2088260298323
1973	41.3268076260801
1974	40.3519289913186
1975	39.2738346216913
1976	38.1673842210953
1977	37.1134020618557
1978	36.0944216016229
1979	35.1501737387495
1980	34.2405165704775
1981	33.2908192665555
1982	32.3667609477162
1983	31.5114359099804
1984	30.726039029092
1985	30.1700282868036
1986	29.8594531111163
1987	29.6414280719475
1988	29.5450282892063
1989	29.5943302087671
1990	29.7364514906518
1991	29.6044567369645
1992	29.2171236796115
1993	28.9335976364617
1994	28.7415016698473
1995	28.5980584227609
1996	28.5172927591048
1997	28.4312142380735
1998	28.2595215785703
1999	28.0062583817613
2000	27.7962827260009
2001	27.5838089614905
2002	27.2459356175918
2003	26.8615232886538
2004	26.4437997998505
2005	25.9443588876786
2006	25.4593889647755
2007	25.0190512768928
2008	24.6207252765732
2009	24.2554726824277
2010	23.7785168329541
2011	23.2154181415674
2012	22.6526678376714
2013	22.1233488140841
2014	21.656618405128
2015	21.1573206731117
2016	20.63501703206
2017	20.1911785686849
2018	19.7734255201882
2019	19.3868633740969
2020	19.082383665717
2021	18.8211693905245
2022	18.5472947751245
2023	18.1859636471611