Year	% of total population
1960	3.6173086848816176
1961	3.579123300618371
1962	3.546917900227075
1963	3.5197104523825313
1964	3.4957003990305164
1965	3.4735648351878514
1966	3.4544529007096463
1967	3.43718418817745
1968	3.4221413587042315
1969	3.409445997593926
1970	3.3973260262543254
1971	3.3820909090308655
1972	3.366292395118481
1973	3.3534774360658157
1974	3.3416201618975467
1975	3.3312807694898106
1976	3.3237465233862364
1977	3.3191858741410063
1978	3.317498189413932
1979	3.3152555022180485
1980	3.3026239227267484
1981	3.285985265774451
1982	3.2735516847429067
1983	3.263366979589833
1984	3.256918849925766
1985	3.252631213870442
1986	3.2485303303367306
1987	3.2443784739965116
1988	3.2413291108081936
1989	3.2412085921589573
1990	3.243511154252103
1991	3.248119202742578
1992	3.2563050646826315
1993	3.2661405259922
1994	3.2737089164371542
1995	3.2773313030237983
1996	3.278386579337851
1997	3.2785002647175325
1998	3.2780774754644986
1999	3.278665072109548
2000	3.280639680233133
2001	3.2833017531490607
2002	3.2882907363060183
2003	3.295208940720655
2004	3.302029057659101
2005	3.3084049089292873
2006	3.315230178904353
2007	3.3224474465371827
2008	3.330008188046665
2009	3.337668464377641
2010	3.347836804700064
2011	3.361343342417487
2012	3.375569152426228
2013	3.387841030613801
2014	3.3976445527987225
2015	3.411500476462602
2016	3.432978133040962
2017	3.460898855544546
2018	3.4954745475942293
2019	3.5341975079071046
2020	3.564868881251862
2021	3.5843535463682596
2022	3.6118767582570688
2023	3.6582698748537363