Year	% of working-age population
1960	60.07189731303461
1961	60.55177131551631
1962	60.46732274536272
1963	60.20392920397741
1964	59.99743524140868
1965	59.876049747309345
1966	59.575957120586324
1967	59.17616528945906
1968	58.84647955870811
1969	58.43159560937054
1970	57.972412175691524
1971	57.49802272872557
1972	57.051799541033944
1973	56.566183066580045
1974	56.07336417561568
1975	55.58299134350064
1976	55.0781508105406
1977	54.60844969749353
1978	54.13930087283928
1979	53.66549105968849
1980	53.14584242383624
1981	52.571540344898935
1982	51.94698833211569
1983	51.28180282345048
1984	50.74684342249683
1985	50.38954801051215
1986	50.118689891509014
1987	49.911776964134084
1988	49.837175901513106
1989	49.79584894886064
1990	49.73554120432284
1991	49.741148796769544
1992	49.792505403843194
1993	49.813170186885415
1994	49.77519727173891
1995	49.6735770300584
1996	49.50557736530152
1997	49.29500999660718
1998	49.02760633511692
1999	48.72914721908662
2000	48.46820907923946
2001	48.26664025465434
2002	48.08914580293036
2003	47.947264981859966
2004	47.864466340432315
2005	47.79987813034197
2006	47.7354302921001
2007	47.67579920954784
2008	47.672304912803085
2009	47.74661402392601
2010	47.83081511257047
2011	48.09010614259061
2012	48.6492616399185
2013	49.334583187757154
2014	50.03698124837304
2015	50.67021691237757
2016	51.321213361520975
2017	51.98221718528825
2018	52.54173219657802
2019	53.10188990233617
2020	53.68141387719095
2021	54.19587774396914
2022	54.522016263901
2023	54.89228928022259