Year	% of total population
1960	3.15367432957087
1961	2.9999366260452
1962	2.86314063191615
1963	2.74643579234902
1964	2.64402322151264
1965	2.54954056704608
1966	2.46546696181949
1967	2.39274456360844
1968	2.32775932525689
1969	2.2683667116534
1970	2.2132621232079
1971	2.16507494060259
1972	2.12668241106347
1973	2.09849530637938
1974	2.07889708142985
1975	2.06273723560336
1976	2.04835137156662
1977	2.03909881678397
1978	2.03565910493793
1979	2.03366852396674
1980	2.03059536608865
1981	2.03496230957749
1982	2.04678910037055
1983	2.05807196069855
1984	2.06702853959244
1985	2.07402149303617
1986	2.08174449929131
1987	2.09068348005034
1988	2.09861255056761
1989	2.10420379346736
1990	2.10851315757292
1991	2.11511212856818
1992	2.12400991039687
1993	2.13432036997727
1994	2.1474324946979
1995	2.1628803630878
1996	2.17779272336264
1997	2.18911021276632
1998	2.19729486251214
1999	2.20351796249567
2000	2.20681866610121
2001	2.2052874994888
2002	2.19787340215158
2003	2.18573117048191
2004	2.17074488394346
2005	2.15535469816848
2006	2.14036716091875
2007	2.12329149143447
2008	2.10503667240077
2009	2.0903495897237
2010	2.10837276181304
2011	2.17056731413878
2012	2.24855429481901
2013	2.33249333904383
2014	2.42536832481184
2015	2.5025683015386
2016	2.5613591240946
2017	2.62505394229815
2018	2.69785658221927
2019	2.75780669637469
2020	2.8030771107022
2021	2.84377047306725
2022	2.8730477506755
2023	2.90722132331568