Year	% of working-age population
1960	9.665211282500643
1961	9.923069358608743
1962	10.291213465394664
1963	10.723729833946793
1964	11.215503401880591
1965	11.727454418757802
1966	12.261371896400016
1967	12.818712021741122
1968	13.345953260654717
1969	13.800575307094698
1970	14.149935366245488
1971	14.410728240515475
1972	14.58877474026351
1973	14.700997269804608
1974	14.808903821923561
1975	14.928336837476467
1976	15.055569043187397
1977	15.201679948594633
1978	15.373936846221529
1979	15.571732384140427
1980	15.850453287285102
1981	16.189470242810618
1982	16.51038449780706
1983	16.809072645650932
1984	17.05886344150357
1985	17.226034544137686
1986	17.31855515862111
1987	17.34900245968844
1988	17.332882412266663
1989	17.301119127284963
1990	17.210785250286587
1991	17.05722458116439
1992	16.908215397263493
1993	16.807771247317845
1994	16.775068693262842
1995	16.77177393762802
1996	16.74393753985626
1997	16.724156670270517
1998	16.722952770927897
1999	16.724215157648846
2000	16.743839360332483
2001	16.75446182876012
2002	16.793629002103945
2003	16.80192598920514
2004	16.742789454835954
2005	16.692190730389314
2006	16.635271509301834
2007	16.62775210435214
2008	16.75881689838424
2009	17.026552274455618
2010	17.275680064961428
2011	17.486594853062552
2012	17.793496038573462
2013	18.18085495261153
2014	18.63065406331282
2015	19.12306247559959
2016	19.610227577820243
2017	20.1642628415789
2018	20.82097401914379
2019	21.57877828745372
2020	22.463764289674472
2021	23.413228219636764
2022	24.366388841639736
2023	25.260651135037797