Year	% of total population
1960	4.18531600451971
1961	4.10629239944508
1962	4.00855287196045
1963	3.90599244865138
1964	3.81673008468284
1965	3.7803756731906
1966	3.79652260135164
1967	3.83421443919246
1968	3.88008341128112
1969	3.9137604124502
1970	3.9207690755576
1971	3.87112899514847
1972	3.74895368108758
1973	3.59081683266235
1974	3.4350126776846
1975	3.29248691495061
1976	3.16254242916295
1977	3.04497823953366
1978	2.94309825593305
1979	2.86183707993121
1980	2.80328177131694
1981	2.76607305847792
1982	2.75359393397025
1983	2.76143401114529
1984	2.78469208584659
1985	2.82123485174148
1986	2.8698445002703
1987	2.93114086733352
1988	2.99717269550105
1989	3.05699366429766
1990	3.10639639679934
1991	3.14464748251465
1992	3.16573930365068
1993	3.17210704104567
1994	3.17699276609372
1995	3.1870249035717
1996	3.20095286882979
1997	3.21782636779852
1998	3.23431274817683
1999	3.24544000264845
2000	3.24959488634669
2001	3.24967507222194
2002	3.24979158896804
2003	3.24925753894585
2004	3.24390762122227
2005	3.23273846726053
2006	3.21599457874163
2007	3.19660575593919
2008	3.17869099097304
2009	3.16493874808016
2010	3.15667259256922
2011	3.15231179215731
2012	3.148303630715
2013	3.14486952019548
2014	3.16248340154103
2015	3.20388309503219
2016	3.2551434897449
2017	3.31737334710056
2018	3.38835816225652
2019	3.46735400206785
2020	3.54835960700628
2021	3.59247696377292
2022	3.6540374163212
2023	3.76709237380868