Year	% of total population
1960	3.13968633634323
1961	3.26464175701084
1962	3.50199435230671
1963	3.71462750107033
1964	3.87285232975166
1965	3.98493900780341
1966	3.97582679801598
1967	3.86172784139213
1968	3.74744853962652
1969	3.63241730645046
1970	3.51955270817485
1971	3.41276223539576
1972	3.31442407047463
1973	3.22376840690527
1974	3.13985094566463
1975	3.14266260803908
1976	3.25230132197078
1977	3.29187694674709
1978	3.2389978928289
1979	3.18693017843746
1980	3.13910890908148
1981	3.0970102793569
1982	3.06295022126518
1983	3.03810621652693
1984	3.02290692559853
1985	3.01778957619888
1986	3.02300191379436
1987	3.0364599692942
1988	3.05792779063383
1989	3.08402251599439
1990	3.11239790275708
1991	3.14521117299539
1992	3.18063548144784
1993	3.21781443904991
1994	3.25722627542837
1995	3.30043814138496
1996	3.48950412829087
1997	3.83204916564242
1998	4.05662304997631
1999	4.15103498120392
2000	4.24364608746928
2001	4.33562427058594
2002	4.42512877317665
2003	4.50841418861533
2004	4.58296670465066
2005	4.65186120554186
2006	4.70983612556279
2007	4.75201329220495
2008	4.78171401012939
2009	4.80610366454189
2010	4.83058597427816
2011	4.86049908435941
2012	4.90306741880239
2013	4.96742468180097
2014	5.06342497100922
2015	5.19075684768649
2016	5.33963028164933
2017	5.49951374138218
2018	5.67040595099002
2019	5.85503670340651
2020	6.01747007813233
2021	6.18199997132055
2022	6.38778617794156
2023	6.60849832514482