Year	% of total population
1960	2.9536483718536
1961	2.93705007573095
1962	2.91778078517207
1963	2.89759319585744
1964	2.88159392095101
1965	2.87038958361584
1966	2.86481176224669
1967	2.86612679355528
1968	2.86724212715996
1969	2.85919477032477
1970	2.84124311021005
1971	2.81329629363711
1972	2.77736561899787
1973	2.74085166862514
1974	2.71275058804213
1975	2.69991400245164
1976	2.70045758483947
1977	2.7116766940573
1978	2.77895152182216
1979	2.90260326535818
1980	3.02973225287996
1981	3.15456193976249
1982	3.27837717628703
1983	3.39462650940727
1984	3.49424237070942
1985	3.57438966525982
1986	3.62500709561116
1987	3.81814449457708
1988	3.90969780342319
1989	3.77507883060672
1990	3.66305839880122
1991	3.56496997660652
1992	3.47642015853024
1993	3.39352727972544
1994	3.31190920230903
1995	3.3043468458413
1996	3.36225264118385
1997	3.39947632753519
1998	3.39609125814259
1999	3.4914439009708
2000	3.67146042789335
2001	3.79988170088953
2002	3.9120926529033
2003	4.01896018064248
2004	4.11617454421931
2005	4.19426734752059
2006	4.24740800193988
2007	4.25768645358814
2008	4.15397400431875
2009	3.98105956444859
2010	3.83313862835087
2011	3.70547350359769
2012	3.59204481052403
2013	3.4802734053903
2014	3.37143542560303
2015	3.26108924810916
2016	3.14869214538623
2017	3.04676702588819
2018	2.95441777367593
2019	2.87105972801195
2020	2.78899873440563
2021	2.69827280816413
2022	2.60866328635481
2023	2.54054474467998