Year	% of total population
1960	3.6839745634342
1961	3.6998370839589
1962	3.75617077852682
1963	3.84449184781508
1964	3.91270514558217
1965	3.9574868584058
1966	3.98540895894538
1967	4.00258363784429
1968	4.01222463256766
1969	4.00270869574809
1970	3.95524513948354
1971	3.93878867241459
1972	4.00073129585948
1973	4.05896903910452
1974	4.08794464805169
1975	4.11168994457953
1976	4.12768192813045
1977	4.1352541310152
1978	4.13332840900516
1979	4.12177064373912
1980	4.05633176066036
1981	3.95005516428708
1982	3.85322023123349
1983	3.76452200283259
1984	3.68945370848729
1985	3.63206890620545
1986	3.59418692301636
1987	3.5769343773962
1988	3.57760684350055
1989	3.59320812579878
1990	3.62193872355311
1991	3.66364637941365
1992	3.71600556639139
1993	3.77683906517777
1994	3.88502463082737
1995	4.02941127930279
1996	4.16306807358733
1997	4.28831636940199
1998	4.41085688846321
1999	4.54526555724893
2000	4.70825516155114
2001	4.90908011033981
2002	5.14469569832676
2003	5.39953683735185
2004	5.65927084123716
2005	5.9199335409722
2006	6.17935819458024
2007	6.43176786384044
2008	6.68432143999631
2009	6.92890095190593
2010	7.14719326030501
2011	7.34047914795586
2012	7.51637778928643
2013	7.68063407573849
2014	7.81802659202378
2015	7.91004603009593
2016	7.95108923541791
2017	8.00389040048474
2018	8.07720321461247
2019	8.16166454081351
2020	8.25253456293149
2021	8.3206429428104
2022	8.4116963704275
2023	8.57247294708278