Year	% of working-age population
1960	4.282115869017632
1961	4.167584960550095
1962	4.056215478450023
1963	3.9432925821906495
1964	3.8129618703812964
1965	3.8333463156254868
1966	4.02511887632098
1967	4.2386769964243145
1968	4.46063928266749
1969	4.694823249040116
1970	4.94372197886038
1971	5.015909890307646
1972	4.849747099077655
1973	4.631574480724757
1974	4.416732811608274
1975	4.2105263157894735
1976	4.0201290439840065
1977	3.846296856989573
1978	3.6880422858282635
1979	3.543943394630759
1980	3.420610734498414
1981	3.3559916026140253
1982	3.3466413773216312
1983	3.3469929360340323
1984	3.345710963579761
1985	3.3468925575726103
1986	3.346979842486903
1987	3.346522477242043
1988	3.349186644525771
1989	3.3469751610681144
1990	3.337246605563285
1991	3.36
1992	3.41941008134478
1993	3.4841004535756017
1994	3.5460161075924623
1995	3.5947188636340868
1996	3.6242760106986855
1997	3.6395927831718202
1998	3.6416809601682822
1999	3.6280360860513534
2000	3.6087717492021008
2001	3.5927953093508576
2002	3.578771474553953
2003	3.512263407876871
2004	3.364435596883858
2005	3.2069409130352993
2006	3.074865569044847
2007	2.9531447459196283
2008	2.8425371151973082
2009	2.748774232398065
2010	2.7586016046252717
2011	2.8416451382429173
2012	2.8789924946149705
2013	3.0578644713186263
2014	3.4179395842934195
2015	3.608138609681243
2016	3.6032128425294596
2017	3.5784298914598627
2018	3.624651843911217
2019	3.829592646653551
2020	4.178986165004309
2021	4.582314522586182
2022	4.9378162547577755
2023	5.293568606981239