Year	% of total population
1960	2.85702545264127
1961	2.82924502581167
1962	2.80659195567983
1963	2.7885435634668
1964	2.77451874345341
1965	2.76254294926626
1966	2.75265717146173
1967	2.74520000530282
1968	2.73954172267037
1969	2.73527164370139
1970	2.73242860245145
1971	2.73096214480187
1972	2.73043726362116
1973	2.73225944588263
1974	2.73643819171682
1975	2.74262359838365
1976	2.75172013872088
1977	2.76450269874714
1978	2.7811750847793
1979	2.80085797874678
1980	2.82261040707632
1981	2.84509892595362
1982	2.86791374464249
1983	2.89090477219723
1984	2.9147792559243
1985	2.93981248960043
1986	2.96615893180698
1987	2.99390586159311
1988	3.02312368970831
1989	3.0539831461568
1990	3.08493212016109
1991	3.11517257641722
1992	3.14410402590704
1993	3.17085179053654
1994	3.19561696436289
1995	3.21887853952199
1996	3.24030091291013
1997	3.25883826268871
1998	3.27315912770967
1999	3.28244358968529
2000	3.2870938012805
2001	3.28992364379771
2002	3.29238446767662
2003	3.29326147174796
2004	3.2908091279578
2005	3.28423663190377
2006	3.27416181625304
2007	3.26287421623334
2008	3.25279465580903
2009	3.24394485834945
2010	3.2368042081635
2011	3.23066462253454
2012	3.21972397928541
2013	3.199708757977
2014	3.16486233391785
2015	3.14506703227923
2016	3.15095089729545
2017	3.15765626301929
2018	3.16409874369089
2019	3.17237317439776
2020	3.17310898192517
2021	3.15750927905422
2022	3.13908758083138
2023	3.13561835805932