Year	% of total population
1960	42.4521657745093
1961	42.3017099803234
1962	42.2245222548294
1963	42.1232093731285
1964	42.0756715938212
1965	42.0970075144912
1966	42.1197041643382
1967	42.1320713663736
1968	42.1252793960326
1969	42.115348150471
1970	42.1109863636749
1971	42.0123973137417
1972	41.7963418539404
1973	41.545606886378
1974	41.3104015246471
1975	41.1000915142078
1976	40.9160553489963
1977	40.6244412305772
1978	40.2107667826927
1979	39.8312772163556
1980	39.5003381975471
1981	39.2972970550312
1982	39.1820672905327
1983	39.0092447629977
1984	38.7803922073062
1985	38.4949881734831
1986	38.2323331522298
1987	38.1271824703961
1988	38.1732326433438
1989	38.311148628694
1990	38.4964392263621
1991	38.7678071634523
1992	39.0626558356045
1993	39.2122252090487
1994	39.1476778273098
1995	38.8888062870066
1996	38.4861013778872
1997	37.8622902435447
1998	37.0609936173899
1999	36.1941912617258
2000	35.2406061055493
2001	34.2356953506007
2002	33.2318300544142
2003	32.2791043252836
2004	31.4321024862164
2005	30.727000178866
2006	30.1437091866371
2007	29.6558154157421
2008	29.302695663228
2009	29.0189318790711
2010	28.7358473643723
2011	28.5212185867199
2012	28.4282531163354
2013	28.4237501340174
2014	28.3948885310607
2015	28.2753516576484
2016	28.365853602124
2017	28.5860959589855
2018	28.68152980046
2019	28.7452694924885
2020	28.7396723302935
2021	28.6729624931736
2022	28.5507958905087
2023	28.299399244332