Year	% of total population
1960	36.62756537638188
1961	36.702299856177696
1962	36.71570461735761
1963	36.66759527273005
1964	36.545825750244475
1965	36.4149637630573
1966	36.300037315038786
1967	36.163314683626005
1968	36.00687408465221
1969	35.83080593436552
1970	35.6292220969263
1971	35.40636384936484
1972	35.1692974481874
1973	34.93180569699752
1974	34.721585924350855
1975	34.54122964278135
1976	34.3857157014339
1977	34.2361459290815
1978	34.09359585624834
1979	33.971709527917085
1980	33.87849176711031
1981	33.81727500223901
1982	33.7838293618485
1983	33.784909320195034
1984	33.80042912741704
1985	33.82608876015332
1986	33.867148187347695
1987	33.92003157031964
1988	33.970285163527656
1989	34.044826282536114
1990	34.124524569161025
1991	34.11188267505631
1992	33.98626079081507
1993	33.84769149054429
1994	33.75862790477701
1995	33.57919187476019
1996	33.27410949810575
1997	32.89837878957365
1998	32.466893415495235
1999	31.978638021847445
2000	31.515013047215927
2001	31.11479443812032
2002	30.72666522886418
2003	30.30361056380687
2004	29.805972999112857
2005	29.27784120795811
2006	28.760456710149754
2007	28.25222488268443
2008	27.761125979236585
2009	27.30146839763505
2010	26.96451739134243
2011	26.73804525360681
2012	26.485286115789687
2013	26.240271133153303
2014	26.025401618185512
2015	25.769730541566048
2016	25.491779293526445
2017	25.202850722598917
2018	24.91681920157896
2019	24.658767349503055
2020	24.440174782548056
2021	24.230754451676184
2022	23.980654948708896
2023	23.709481298903064