Year	% of total population
1960	2.58617666572997
1961	2.58606319841727
1962	2.588271370712
1963	2.59657075153095
1964	2.61581499879723
1965	2.64539611176864
1966	2.6837865783805
1967	2.73082418145072
1968	2.78393247002475
1969	2.83987489779171
1970	2.89566092879331
1971	2.95165814697406
1972	3.00904775090267
1973	3.06710507940312
1974	3.12714231294257
1975	3.18984079208134
1976	3.2545530596289
1977	3.31769818489675
1978	3.37779717565741
1979	3.43610121197066
1980	3.48957193481984
1981	3.53623800987247
1982	3.57568244371455
1983	3.60444476743761
1984	3.62218448365331
1985	3.63262308078349
1986	3.63782807033605
1987	3.63858306657672
1988	3.63362881243557
1989	3.6218951594245
1990	3.60579723300972
1991	3.5875397860043
1992	3.56387341185912
1993	3.53303702058048
1994	3.49385409795191
1995	3.44723089244144
1996	3.39561973828024
1997	3.34069338555307
1998	3.28327138302531
1999	3.22219680822366
2000	3.16034618783122
2001	3.09965012847442
2002	3.04087529299439
2003	2.98629535417814
2004	2.93768555185622
2005	2.9017717089369
2006	2.87926601170481
2007	2.86151209523929
2008	2.84274749638627
2009	2.81914980307844
2010	2.78717540825802
2011	2.75156059321183
2012	2.72293988980839
2013	2.69818938537079
2014	2.66944487903074
2015	2.64217672630287
2016	2.61708142189141
2017	2.59095238503338
2018	2.56527217562414
2019	2.53896890539136
2020	2.49587496065782
2021	2.43742713701262
2022	2.38123285451243
2023	2.33603736220764