Year	% of total population
1960	3.11523833075171
1961	3.11448231404026
1962	3.11778185584267
1963	3.11875011848581
1964	3.11155642166415
1965	3.09438348172978
1966	3.06569023035722
1967	3.0267416696143
1968	2.98151834648185
1969	2.93566840017904
1970	2.89191224696137
1971	2.85130782638754
1972	2.81377736783926
1973	2.78080598720338
1974	2.74876523740191
1975	2.7118604282428
1976	2.67424622010164
1977	2.63715982348411
1978	2.59858257469978
1979	2.55679813904139
1980	2.5113236576093
1981	2.46184007764841
1982	2.4081800852819
1983	2.3547817595208
1984	2.3118666857969
1985	2.28501143814212
1986	2.27068252597339
1987	2.26564523344898
1988	2.26692663310744
1989	2.27383929665939
1990	2.2861729141372
1991	2.30317054654079
1992	2.31463624304291
1993	2.31441514837933
1994	2.16369743630494
1995	1.93572171256135
1996	1.92817090051023
1997	1.91982059631144
1998	2.005497277168
1999	2.19525675918122
2000	2.39938071428831
2001	2.6180574495853
2002	2.80142054052969
2003	2.87099374456662
2004	2.87865384456802
2005	2.90060727543995
2006	2.93076138458784
2007	2.96738422721387
2008	3.0108577528115
2009	3.05958827874525
2010	3.11213051934755
2011	3.17111332473349
2012	3.15235674472761
2013	3.06514536813745
2014	3.00649125344819
2015	2.97804879326639
2016	2.97238276124948
2017	2.98463926470068
2018	3.01318864018618
2019	3.05432134624093
2020	3.10210547610455
2021	3.14374191583461
2022	3.19693816315557
2023	3.27042119358059