Year	% of total population
1960	2.83317033284184
1961	2.81327375103698
1962	2.79005166142409
1963	2.7687709296164
1964	2.75796869745302
1965	2.75765578623255
1966	2.76279964585367
1967	2.77772233225174
1968	2.80211069615787
1969	2.8246605682539
1970	2.84159781570359
1971	2.85574769779008
1972	2.86437591531564
1973	2.86729634242379
1974	2.86530240526468
1975	2.8591253660188
1976	2.85738711524963
1977	2.85701731929628
1978	2.85263189250249
1979	2.84748705605643
1980	2.84181473080509
1981	2.83654599745673
1982	2.83066099347619
1983	2.80839351993222
1984	2.77231729599527
1985	2.74166329069768
1986	2.7179956613036
1987	2.70969424698263
1988	2.71356168529478
1989	2.71065949531705
1990	2.69972642069652
1991	2.70257400110498
1992	2.70287540341517
1993	2.68691685211049
1994	2.67158014441531
1995	2.64590058106494
1996	2.62336173268937
1997	2.62432824840535
1998	2.63352921238808
1999	2.63173663365891
2000	2.63431195617517
2001	2.64461421509236
2002	2.65049922569634
2003	2.65664665429943
2004	2.66578441219237
2005	2.67741460315179
2006	2.68975123304311
2007	2.7018549869232
2008	2.71731884775633
2009	2.74226379777164
2010	2.77457060078151
2011	2.8117934199333
2012	2.85281418553996
2013	2.89159791186152
2014	2.92604021404544
2015	2.96024240129334
2016	2.9951968848595
2017	3.03046685741489
2018	3.06692408540751
2019	3.10388326187596
2020	3.13009683831197
2021	3.13842037861602
2022	3.14095385915072
2023	3.15774783670782