Year	% of working-age population
1960	19.588741142785764
1961	19.68420155317347
1962	19.51766992417399
1963	19.2940919838892
1964	19.268351568890527
1965	19.61284923936404
1966	19.85215882400705
1967	19.75967789664356
1968	19.627151301472058
1969	19.49045307414729
1970	19.455087969121806
1971	19.4465421625904
1972	19.252546389773773
1973	18.970999774064886
1974	18.75584936003058
1975	18.70113621704655
1976	18.749292841832954
1977	18.754454320258954
1978	18.655644605397175
1979	18.558662593370958
1980	18.517682836122646
1981	18.471621396729297
1982	18.369337911312993
1983	18.231131689678033
1984	18.236178590156424
1985	18.320609241808224
1986	18.381516112543526
1987	18.49997025720724
1988	18.684094815899797
1989	18.791681178865876
1990	18.739425684288594
1991	18.579685870189465
1992	18.40377111817631
1993	18.215576612504385
1994	18.016911628997313
1995	17.792425149430017
1996	17.5216879128454
1997	17.275433774521744
1998	17.06467378487611
1999	16.835876843047995
2000	16.64254283937447
2001	16.503754860047867
2002	16.370148935795182
2003	16.272231145788343
2004	16.209883581394646
2005	16.023854750388665
2006	15.675538430790859
2007	15.468563900076493
2008	15.637437461614148
2009	16.125025928063113
2010	16.796772158863853
2011	17.54960628687439
2012	18.310218302253816
2013	19.05079428625808
2014	19.60092541876834
2015	20.017352314631935
2016	20.460154323458188
2017	20.894946612964524
2018	21.347481164135242
2019	21.81158302548325
2020	22.28067048719406
2021	22.723829589012738
2022	23.186709272048507
2023	23.70402606216439