Year	% of total population
1960	3.096490091870926
1961	3.093790311449145
1962	3.090272110385492
1963	3.0862695337137405
1964	3.0813165677378787
1965	3.0752453621297824
1966	3.068802290486251
1967	3.061531486370602
1968	3.0546716091897355
1969	3.049674401322289
1970	3.0457052524605905
1971	3.043635987524261
1972	3.0432958629111857
1973	3.044031165624783
1974	3.0450225322944022
1975	3.045248751195496
1976	3.0470376925226765
1977	3.048896917558701
1978	3.0490162489603763
1979	3.0485256149576196
1980	3.0477125460311325
1981	3.0480621629401776
1982	3.0477853386202134
1983	3.0435651698226214
1984	3.0381180287551226
1985	3.032955117538849
1986	3.0278708320586625
1987	3.0258584514172915
1988	3.019002408993084
1989	3.006826587278982
1990	2.995955394219426
1991	2.984494196869914
1992	2.9704907537346377
1993	2.953600547103437
1994	2.9336499700696113
1995	2.915550648188698
1996	2.9028116417235683
1997	2.89012977668724
1998	2.8741607671483997
1999	2.8593313106555582
2000	2.8475725312436864
2001	2.836296185060693
2002	2.8254235985447793
2003	2.8151589961134413
2004	2.8051141053828177
2005	2.7952616590449497
2006	2.786212165418524
2007	2.7780768063507213
2008	2.7704815856734486
2009	2.7651374164145275
2010	2.7641375164637516
2011	2.7660851259956463
2012	2.7689654999497497
2013	2.7697037491857905
2014	2.767207416145664
2015	2.7679984122456482
2016	2.7745621720515494
2017	2.7853341390305912
2018	2.8009664091883058
2019	2.8188212050680406
2020	2.825936730704537
2021	2.8187098723833883
2022	2.812252276057159
2023	2.8170315716637897