Year	% of total population
1960	29.2554710438883
1961	29.0864907056833
1962	29.0504328984642
1963	29.0192913952443
1964	29.0231897877707
1965	29.0899582277584
1966	29.1620425346215
1967	29.1936807645246
1968	29.1485969975155
1969	29.0468651828647
1970	28.687502457929
1971	28.3314494417775
1972	28.1330201083042
1973	27.8559459966332
1974	27.5938866713728
1975	27.3688066942466
1976	27.1847159125894
1977	26.9943367145586
1978	26.6927991219278
1979	26.2884686669774
1980	25.826193634369
1981	25.3499631521621
1982	24.9061795469469
1983	24.4919885424325
1984	24.0750584045685
1985	23.6088643719443
1986	23.0695654228169
1987	22.4802270732326
1988	21.8575101438547
1989	21.191166205412
1990	20.4554784055633
1991	19.6920005982126
1992	19.0397117633097
1993	18.5605722839326
1994	18.141480756165
1995	17.725554193591
1996	17.3554283482418
1997	17.039816894425
1998	16.7723480783351
1999	16.568199583148
2000	16.3590793588215
2001	16.1899855753364
2002	16.1167571756779
2003	16.057852012588
2004	15.9813691767727
2005	15.8918893852312
2006	15.7717700862765
2007	15.6204726095213
2008	15.4748049574516
2009	15.337634707893
2010	15.1728008789996
2011	14.9932616022261
2012	14.8404888536361
2013	14.6782202935916
2014	14.4694002097542
2015	14.235026593914
2016	14.0486712495692
2017	13.9039129645997
2018	13.7585053599013
2019	13.6276627142885
2020	13.4956608643372
2021	13.3432969524212
2022	13.1825264960644
2023	13.015489960825