Year	% of total population
1960	5.92622624426336
1961	5.80533590173178
1962	5.68024584202751
1963	5.55647560588696
1964	5.44549457260495
1965	5.34907634670048
1966	5.26473146082811
1967	5.19421396544982
1968	5.13570206832412
1969	5.08547768052903
1970	5.04378741800027
1971	5.0077462910038
1972	4.97315306216307
1973	4.945616295791
1974	4.93233645285771
1975	4.92360357863423
1976	4.8160210082111
1977	4.73644199696525
1978	4.73392483834134
1979	4.7023022651894
1980	4.6351151364071
1981	4.53835232434225
1982	4.36715679209285
1983	4.1964724385221
1984	4.10700546662966
1985	4.05544278298598
1986	4.03647449123877
1987	4.03905132914984
1988	4.05763711267743
1989	4.10740087510942
1990	4.18151267238677
1991	4.2680625319426
1992	4.367269614126
1993	4.47421065772947
1994	4.58356223432054
1995	4.69167651604691
1996	4.79787657808417
1997	4.90326290571473
1998	5.00590542536951
1999	5.10478774217533
2000	5.20157652497013
2001	5.29679668276679
2002	5.39506452699618
2003	5.49516266788314
2004	5.58868452647358
2005	5.67416487177756
2006	5.75694492924532
2007	5.839862624979
2008	5.92564304907119
2009	6.01736834254856
2010	6.11602807518596
2011	6.22579747124735
2012	6.35094757728711
2013	6.49930712222357
2014	6.66975065514833
2015	7.03080565146772
2016	7.57166176982001
2017	8.09083567766035
2018	8.56621226015357
2019	8.99203402891416
2020	9.3500733322638
2021	9.62209915154424
2022	9.89270984533966
2023	10.2812429636961