Year	% of total population
1960	11.0344769818401
1961	11.2406942391887
1962	11.4319383996218
1963	11.6082142467547
1964	11.7826243645074
1965	11.976104270419
1966	12.1886404393835
1967	12.392722433649
1968	12.5703364883979
1969	12.7191654989233
1970	12.8600701862305
1971	13.0031293313029
1972	13.14324491927
1973	13.2959890140895
1974	13.482252633375
1975	13.6845061586915
1976	13.8895915581338
1977	14.1176486591229
1978	14.3463848301219
1979	14.5563978267235
1980	14.7539292413485
1981	14.9354446602922
1982	15.1333886279017
1983	15.3473422950287
1984	15.5155063039288
1985	15.7193831631102
1986	15.9499450444569
1987	16.0971269413494
1988	16.1939119447612
1989	16.2767555051083
1990	16.3091100119282
1991	16.2895938218909
1992	16.2381603697326
1993	16.132735609452
1994	16.0238123594927
1995	15.9331503160174
1996	15.8350317584577
1997	15.7193660820458
1998	15.5633010584823
1999	15.3594377588793
2000	15.1584047164217
2001	15.0025354357327
2002	14.8641244921848
2003	14.7616818002844
2004	14.7206168094825
2005	14.7088071883727
2006	14.6755344112291
2007	14.639808908508
2008	14.6604576469587
2009	14.781580259834
2010	14.981948941672
2011	15.2465266905969
2012	15.5297430433133
2013	15.780354494689
2014	16.029715117401
2015	16.2771285556204
2016	16.5199315317727
2017	16.7836009923461
2018	17.0872801337269
2019	17.3963827799917
2020	17.7299264903652
2021	18.098328694262
2022	18.4354378165875
2023	18.7447025771049