Year	% of working-age population
1960	51.94313053111988
1961	52.26893064985497
1962	51.94679765216055
1963	51.59232764057139
1964	51.522713566313236
1965	51.568252567311085
1966	50.735486819832985
1967	49.455093408808146
1968	48.3841801548564
1969	47.17400551853885
1970	45.967448145653044
1971	44.709022466002786
1972	43.322936054800216
1973	41.86112048498613
1974	40.4485327892354
1975	39.07478732571287
1976	37.74463703923159
1977	36.556598323475676
1978	35.50035174052784
1979	34.5871523335551
1980	33.88566348369968
1981	33.40942111966998
1982	33.08144717829711
1983	32.771038811030365
1984	32.47451007113379
1985	32.18102418539374
1986	31.91440407399027
1987	31.82882293245795
1988	31.95665947364424
1989	32.153706535140394
1990	32.36098791891164
1991	32.614465846120595
1992	32.84875606440022
1993	32.98239843981467
1994	32.997495000223005
1995	32.89403440662019
1996	32.717391431692086
1997	32.53521189417011
1998	32.36465797325051
1999	32.17229899185007
2000	31.90541933784879
2001	31.591948118142458
2002	31.277362119985494
2003	30.962559090995526
2004	30.609753673069914
2005	30.217943294315532
2006	29.857476213312292
2007	29.583606636020743
2008	29.392954085477534
2009	29.2161010284683
2010	29.018622660440144
2011	28.886256837914384
2012	28.8299433818433
2013	28.771963678080514
2014	28.67991046084539
2015	28.55029717179159
2016	28.482013990582583
2017	28.43205865738499
2018	28.30197413030263
2019	28.14003429988381
2020	27.908294421968844
2021	27.60422113454283
2022	27.261520163942766
2023	26.912914344284708