Year	% of total population
1960	3.48367718745384
1961	3.40537195492033
1962	3.34263762193894
1963	3.30824718687412
1964	3.29009069569507
1965	3.28310663635836
1966	3.28416407993638
1967	3.29041916167665
1968	3.28559311765419
1969	3.22754496630456
1970	3.20457371465643
1971	3.24718785759009
1972	3.28752502771665
1973	3.32943485241937
1974	3.37844775461
1975	3.4311733851633
1976	3.49285221755419
1977	3.56314583544035
1978	3.63240214233592
1979	3.70472447642866
1980	3.77627036521107
1981	3.84214712920651
1982	3.90249198839222
1983	3.95550984253885
1984	4.01391985557033
1985	4.07790760291042
1986	4.13674699165218
1987	4.19468189852188
1988	4.2623057224117
1989	4.34837848997872
1990	4.42052531816951
1991	4.4681255004251
1992	4.51969666465338
1993	4.58271744713862
1994	4.65344354310062
1995	4.73407744578144
1996	4.8224767989965
1997	4.92056942438622
1998	5.04874128109196
1999	5.20408257261029
2000	5.37720561350926
2001	5.56427043208333
2002	5.76175626143399
2003	5.97184730989903
2004	6.19590654914425
2005	6.42994459828075
2006	6.67841854462626
2007	6.93676388615976
2008	7.20296036969059
2009	7.46371749946007
2010	7.68112643515482
2011	7.87503731644533
2012	8.08156946581768
2013	8.30190181063661
2014	8.54634194983235
2015	8.83098024251675
2016	9.12977206847638
2017	9.42206482538153
2018	9.72111064307779
2019	10.0415594973614
2020	10.3790812247078
2021	10.6905837387074
2022	11.0187773430292
2023	11.3950599165162