Year	% of total population
1960	3.030778678558996
1961	3.0253421754292487
1962	3.0214206829795947
1963	3.0200068021236697
1964	3.0220561005748974
1965	3.0269674731199436
1966	3.034781332773444
1967	3.045861702892353
1968	3.058887371578203
1969	3.0722528123047925
1970	3.084634185270283
1971	3.0807410933895976
1972	3.077920416582983
1973	3.0917670425894475
1974	3.1052513225976153
1975	3.115601749232783
1976	3.1290012871536974
1977	3.1462610655165655
1978	3.1611722972262677
1979	3.1737290079857967
1980	3.1858342345602546
1981	3.1968489301298404
1982	3.203440888662646
1983	3.2036727714942645
1984	3.201133082691939
1985	3.199624502240985
1986	3.1984907938478875
1987	3.199947689035108
1988	3.196914854858741
1989	3.1877068648337876
1990	3.1802822904703825
1991	3.1751669155116398
1992	3.167729268202828
1993	3.155791472921721
1994	3.1422849416706002
1995	3.131778255640304
1996	3.1259419776267197
1997	3.1252769812203987
1998	3.131605119983619
1999	3.144974776262035
2000	3.1612542575070437
2001	3.1757020140802554
2002	3.18807354674667
2003	3.198757954092876
2004	3.2085525070720946
2005	3.2179465518884323
2006	3.2279709473030556
2007	3.237593778417781
2008	3.246562650427204
2009	3.2583097005316097
2010	3.2743471495370753
2011	3.293801279102528
2012	3.3149373776954714
2013	3.3324346336079094
2014	3.348808988767116
2015	3.3736832507912484
2016	3.406912323094631
2017	3.44681813450747
2018	3.494707380641683
2019	3.5481646223102206
2020	3.5923950873451895
2021	3.6236615934225758
2022	3.657402163307616
2023	3.7021220432623814