Year	% of total population
1960	3.737961374224043
1961	3.738482567673447
1962	3.750570419432452
1963	3.760250238999102
1964	3.7681357541406735
1965	3.7744093254209856
1966	3.7712097981206045
1967	3.759061249822769
1968	3.746662685835964
1969	3.7328881567152767
1970	3.717444926627221
1971	3.702460639095038
1972	3.688216314620945
1973	3.6726288731119534
1974	3.6544096378006277
1975	3.6409031366458113
1976	3.6378819216820064
1977	3.6252466844366036
1978	3.595352150156513
1979	3.564378443631713
1980	3.5364519508138317
1981	3.5020226294963543
1982	3.4670227091649872
1983	3.441725312203739
1984	3.425641249190919
1985	3.4192129654145154
1986	3.4236298650450423
1987	3.438746282856182
1988	3.4614173384800644
1989	3.4881982168402055
1990	3.4984505052536905
1991	3.5251282840963607
1992	3.562387128881958
1993	3.6084161269003774
1994	3.6575712384084116
1995	3.705059474160311
1996	3.771779021990999
1997	3.856616311677152
1998	3.925981754832333
1999	3.9771696434062185
2000	4.023076074932918
2001	4.064898150107089
2002	4.10898605117172
2003	4.147963873546692
2004	4.175017658774742
2005	4.196371541129143
2006	4.215646473003682
2007	4.2364659758473975
2008	4.262095495435609
2009	4.294498704954101
2010	4.3358533728970885
2011	4.395561794480325
2012	4.471030968106318
2013	4.552766510792213
2014	4.64079413532947
2015	4.738279266739017
2016	4.852189779639558
2017	4.983632102136289
2018	5.12412051717288
2019	5.269932854046517
2020	5.409003668169334
2021	5.530584064392926
2022	5.649950871525278
2023	5.792377381710976