Year	% of total population
1960	4.73760817391622
1961	4.61538137263868
1962	4.5136607947322
1963	4.43255656350896
1964	4.36928095187941
1965	4.32234744184922
1966	4.28658998711632
1967	4.26092074703318
1968	4.24579938136322
1969	4.23292470949093
1970	4.22369789636255
1971	4.22178679742914
1972	4.22647355117201
1973	4.23505406205026
1974	4.24403909088826
1975	4.24960284893914
1976	4.38979959637615
1977	4.67493383891278
1978	4.9843073422246
1979	5.12093654211013
1980	5.05229506320597
1981	4.94348881518245
1982	4.81808816171457
1983	4.71230609836713
1984	4.61813681987368
1985	4.51995605951991
1986	4.42408194516107
1987	4.35033931822308
1988	4.32565718575471
1989	4.35796665190023
1990	4.41819797852295
1991	4.49042863565326
1992	4.60468318946513
1993	4.77225314843839
1994	4.93084174973547
1995	5.03756339258213
1996	5.10647649926221
1997	5.15810409707475
1998	5.21434548314965
1999	5.32903402039351
2000	5.51888768435291
2001	5.74357255467656
2002	5.98084572773442
2003	6.19588253648836
2004	6.33847714933935
2005	6.38708288527006
2006	6.34227524885308
2007	6.1975166502204
2008	5.97191838479878
2009	5.7500316898891
2010	5.57504287688832
2011	5.44136885352619
2012	5.36935237248639
2013	5.35891260248801
2014	5.40112353051344
2015	5.48796672168444
2016	5.61707166862732
2017	5.78473041980459
2018	5.99030004516612
2019	6.24104285523163
2020	6.47151357356977
2021	6.71658622444389
2022	7.10765341124228
2023	7.61532257177723