Year	% of total population
1960	26.5470535255162
1961	26.4151799775018
1962	26.2108723943469
1963	25.9872386270212
1964	25.7849603216913
1965	25.6428364881672
1966	25.5435615944149
1967	25.458815949675
1968	25.3603748962446
1969	25.2109058761954
1970	25.011171903247
1971	24.7951897533019
1972	24.6083070978426
1973	24.4604616224287
1974	24.3483367872508
1975	24.296735344289
1976	24.2815799036008
1977	24.2367394110541
1978	24.1471887567
1979	24.0132233680923
1980	23.8290814850542
1981	23.5721458151476
1982	23.2259374972616
1983	22.8207560900247
1984	22.3817094647828
1985	21.893460576761
1986	21.372829441005
1987	20.8585699982396
1988	20.3476406891748
1989	19.820511773477
1990	19.2807399933316
1991	18.7519096049895
1992	18.2458170092575
1993	17.7469688971126
1994	17.2335373562216
1995	16.7027982200103
1996	16.2024390387258
1997	15.7615898119712
1998	15.3691424862711
1999	15.0404159630354
2000	14.7900378588398
2001	14.6090271370642
2002	14.4732946299442
2003	14.3621973709252
2004	14.2844001135213
2005	14.2841319041638
2006	14.3214539982692
2007	14.3548174422874
2008	14.4153085934338
2009	14.4945871266201
2010	14.5662734168327
2011	14.6149546951403
2012	14.6413946944328
2013	14.6448824456591
2014	14.61489555088
2015	14.5505018626972
2016	14.4788730743491
2017	14.4180841253065
2018	14.3510409144581
2019	14.271109087704
2020	14.177384022727
2021	14.0602267129966
2022	13.8693839395411
2023	13.598436634083