Year	% of total population
1960	5.08357565284262
1961	4.9280132451529
1962	4.78869219668961
1963	4.67164531152277
1964	4.5830074405641
1965	4.52001612992496
1966	4.48298568062131
1967	4.4733599616853
1968	4.47798173898883
1969	4.4820726907486
1970	4.48380872086896
1971	4.47895588919792
1972	4.46446843687235
1973	4.44883443462616
1974	4.44306963151874
1975	4.44541356949719
1976	4.45303062420545
1977	4.4684344994215
1978	4.48040532188545
1979	4.46576492028232
1980	4.4203550695998
1981	4.34535934756107
1982	4.23832886029397
1983	4.11728301433796
1984	4.00526221749972
1985	3.90943694683554
1986	3.82582270742162
1987	3.75663842637539
1988	3.70862238463798
1989	3.68089832846101
1990	3.67922724064878
1991	3.71024612474575
1992	3.76155377123829
1993	3.82286770699744
1994	3.88802518438925
1995	3.94534833128008
1996	3.99217129227385
1997	4.02358334636708
1998	4.0388760734895
1999	4.05428297811669
2000	4.08202258109418
2001	4.1263888067858
2002	4.18448219008065
2003	4.24931773827941
2004	4.30713607558168
2005	4.33709084024541
2006	4.32954671843867
2007	4.27890618190155
2008	4.18508916277335
2009	4.0716705427202
2010	3.97124546753735
2011	3.90680590056188
2012	3.88402365259599
2013	3.89960997965053
2014	3.94547064956053
2015	4.01951362814247
2016	4.12219416972967
2017	4.24598253831901
2018	4.38470908643039
2019	4.54222836376863
2020	4.71578151803122
2021	4.91425616006673
2022	5.14761022804344
2023	5.40640874142508