Year	% of working-age population
1960	13.50269361933475
1961	13.610935447779346
1962	13.713272300244453
1963	13.825516036087102
1964	13.912031649988363
1965	14.01431718061674
1966	14.138118542686243
1967	14.230631276901004
1968	14.314274290283887
1969	14.422949808310934
1970	14.529691107916175
1971	14.604523411012401
1972	14.694188308941714
1973	14.820996411583076
1974	14.989496231000535
1975	15.178389813270412
1976	15.362679733311912
1977	15.53936321875495
1978	15.752171034697612
1979	15.99051734026689
1980	16.263521634615387
1981	16.59349983399122
1982	16.894265947042417
1983	17.18293811863562
1984	17.483253252902184
1985	17.76639202381777
1986	17.999931598207873
1987	18.187651985949742
1988	18.293089647812167
1989	18.326745718050066
1990	18.636063408190225
1991	19.27585045469855
1992	19.94210689548227
1993	20.635930047694753
1994	21.38171010185219
1995	21.839248510544977
1996	21.864136732329083
1997	21.841019199712903
1998	21.82103051668269
1999	21.745122985581
2000	21.65647387733706
2001	21.510707154169246
2002	21.32365412666644
2003	21.16746859128575
2004	21.01580209599527
2005	20.926834020718996
2006	21.044631306597672
2007	21.445183797402933
2008	22.087339354504547
2009	22.781026640675766
2010	23.31997784944135
2011	23.787611774688337
2012	24.46502192264904
2013	25.38476716653512
2014	26.516280764516875
2015	27.418981863830066
2016	27.98040816326531
2017	28.37837837837838
2018	28.567792835782914
2019	28.712777987184317
2020	28.95071492819702
2021	29.145249161254576
2022	29.18175679823215
2023	29.27366777876404