Year	% of total population
1960	41.44910408983644
1961	41.694010870921716
1962	41.92536843155831
1963	42.14472709970671
1964	42.30333843423098
1965	42.39105056441247
1966	42.45784363052485
1967	42.50410927444667
1968	42.51788290901587
1969	42.49876913030724
1970	42.45243128265846
1971	42.39078950380784
1972	42.30648185258353
1973	42.19729858775917
1974	42.073643430954945
1975	41.930978633440624
1976	41.784874576801165
1977	41.62844430677268
1978	41.456815737676536
1979	41.28657170782028
1980	41.12026605869479
1981	40.956263635246295
1982	40.80428203401634
1983	40.655352383876796
1984	40.50668928209519
1985	40.35363933704556
1986	40.18342299907989
1987	40.00340040721062
1988	39.812783758688575
1989	39.60848677523056
1990	39.3869813600124
1991	39.14193517960582
1992	38.904911423024906
1993	38.65666118524628
1994	38.36455064870981
1995	38.026232210886405
1996	37.65728892121367
1997	37.257437328919444
1998	36.82845157510592
1999	36.38547581766763
2000	35.94266403941643
2001	35.509080712540275
2002	35.09257115099331
2003	34.68029948907482
2004	34.26231005738625
2005	33.84887971889503
2006	33.43714095284048
2007	33.03161251014064
2008	32.64832459802833
2009	32.27859043268691
2010	31.91307563977967
2011	31.564375854424032
2012	31.231944816226566
2013	30.907614096654296
2014	30.58111106612704
2015	30.242905282488774
2016	29.892899374428087
2017	29.533964804764107
2018	29.177812060190735
2019	28.823551863016085
2020	28.474480828804865
2021	28.148309496444853
2022	27.82261280728766
2023	27.463899932685287