Year	% of total population
1960	31.19462185472156
1961	31.986381013276354
1962	32.77047258858584
1963	33.59032741891879
1964	34.475286144875
1965	35.11273350914635
1966	35.771045177070214
1967	36.479133551984795
1968	37.203834519962285
1969	37.92405876006907
1970	38.74571698356405
1971	40.95892245193451
1972	44.17711340740992
1973	47.66489444288576
1974	51.48335662848288
1975	55.72922433093351
1976	49.63055530857515
1977	44.77202072988419
1978	49.401254317311185
1979	55.04961125560099
1980	54.76427791997981
1981	54.465843601823714
1982	54.55789700315915
1983	52.92849349370291
1984	51.03370951314944
1985	49.1239482451383
1986	47.044235053702984
1987	45.05849531241245
1988	43.3883652073906
1989	39.49726875775422
1990	35.96652475164872
1991	32.72789899676388
1992	32.48397303684219
1993	32.299499632868574
1994	32.16192610150242
1995	32.01775919022942
1996	31.86067373730338
1997	31.72401267811404
1998	32.54535290649146
1999	33.45605432445024
2000	34.40891423080181
2001	35.41066709195297
2002	37.731369974718135
2003	37.96697616568257
2004	38.112467066844715
2005	38.27980092370436
2006	38.51833442658517
2007	38.66479347173408
2008	38.91856822543029
2009	39.29862546668592
2010	39.838724528604025
2011	40.35273344835023
2012	40.213972169057364
2013	37.508978488782326
2014	34.7260955810187
2015	34.8292842251998
2016	36.425240136841694
2017	38.16992653110397
2018	40.082936204457894
2019	41.6277017253996
2020	42.812254378171836
2021	43.53244474738276
2022	44.32187031113865
2023	45.22573137863215