Year	% of total population
1960	3.02059524728688
1961	2.99479994109722
1962	2.96746563574658
1963	2.94170699717814
1964	2.9172182279413
1965	2.89420030239266
1966	2.87690348401856
1967	2.864118626437
1968	2.85341552523369
1969	2.84498807582907
1970	2.8379494706485
1971	2.83482769621636
1972	2.83466563432936
1973	2.83440870557439
1974	2.83611331053633
1975	2.83967847518875
1976	2.84558040459579
1977	2.85075145330333
1978	2.85016613969798
1979	2.8468896750771
1980	2.84331092058758
1981	2.84114713196523
1982	2.84041697184431
1983	2.83828144460428
1984	2.8349672353626
1985	2.83163005152167
1986	2.82982746927578
1987	2.82976356431016
1988	2.83090827283627
1989	2.83401503160371
1990	2.83835595822393
1991	2.84598965038458
1992	2.8566846460632
1993	2.8669928960207
1994	2.86970738691489
1995	2.87110609956156
1996	2.88070302690971
1997	2.89729429492398
1998	2.91656215847364
1999	2.93384293472929
2000	2.95088272523811
2001	2.96745300729203
2002	2.98336178796083
2003	3.00002314604263
2004	3.01588560352894
2005	3.03051552569271
2006	3.04468800336092
2007	3.05762261247089
2008	3.06985216512767
2009	3.0820598251458
2010	3.09271972362265
2011	3.10052605760029
2012	3.10443399995263
2013	3.1005742565742
2014	3.08883780126197
2015	3.0729260782558
2016	3.0547859143013
2017	3.03790053335969
2018	3.02661161313258
2019	3.01982193456018
2020	3.00071140817177
2021	2.96239701082397
2022	2.92045784125783
2023	2.89012793932801