Year	% of total population
1960	41.3629455834911
1961	41.4748482480918
1962	41.3628978233755
1963	41.2238213689117
1964	41.0829136063446
1965	40.950517371561
1966	40.8117387108954
1967	40.6480564859113
1968	40.4421503501861
1969	40.1701784182824
1970	39.8049666022762
1971	39.3259018464657
1972	38.6631644206611
1973	37.8030578340775
1974	36.8440446445599
1975	35.8559214703048
1976	34.869704693974
1977	33.9076865846345
1978	32.9878499499214
1979	32.1277112127328
1980	31.3427031300306
1981	30.6406365926119
1982	30.0158868120358
1983	29.4756625891947
1984	29.0466275313842
1985	28.7364577148731
1986	28.5388777215683
1987	28.4106180645326
1988	28.3248848073928
1989	28.2834637581609
1990	28.2673725924115
1991	28.2519787641674
1992	28.2135824221382
1993	28.1050545352605
1994	27.9195994437449
1995	27.688057798555
1996	27.4060347258591
1997	27.0725234546758
1998	26.694572479957
1999	26.2800040488232
2000	25.8396736056115
2001	25.4022939465694
2002	24.9673757360352
2003	24.5084132263745
2004	24.0348628026716
2005	23.5571732207004
2006	23.153530575155
2007	22.8678768994113
2008	22.6310188793976
2009	22.3941150245207
2010	22.1465119416236
2011	21.87671059183
2012	21.5988557382349
2013	21.3385419174652
2014	21.0774555052656
2015	20.7826174132522
2016	20.4024259178456
2017	19.9061941588519
2018	18.6166238996979
2019	17.8121917180416
2020	17.7131732778272
2021	17.402462986897
2022	17.1525945067965
2023	16.9463288160477