Year	% of working-age population
1960	5.772940481321127
1961	5.7660437857993045
1962	5.766847130378955
1963	5.770877857168235
1964	5.778677418196546
1965	5.785473926108767
1966	5.789705173302057
1967	5.793423089322158
1968	5.798974475017649
1969	5.806687208487751
1970	5.813771167479848
1971	5.820145769643669
1972	5.827503800229329
1973	5.836112340552251
1974	5.843696096142435
1975	5.851337304700762
1976	5.865262463590706
1977	5.881234962396959
1978	5.896480102690822
1979	5.913508579665788
1980	5.9153065494714765
1981	5.9095832196081615
1982	5.9112024933539615
1983	5.907493401225869
1984	5.902661395517647
1985	5.903222679600164
1986	5.900950121882414
1987	5.902276018859775
1988	5.8983523707443775
1989	5.8852054921968815
1990	5.874557085385073
1991	5.865709418917055
1992	5.855186393809118
1993	5.838814871781297
1994	5.8069921455494065
1995	5.76854461365697
1996	5.741703945210245
1997	5.716358755752359
1998	5.682586473427493
1999	5.648209795243561
2000	5.62078343808142
2001	5.597306504737513
2002	5.57564413899439
2003	5.554229210544657
2004	5.533603913509308
2005	5.51704609294112
2006	5.503818331170132
2007	5.492188373107074
2008	5.4823156175101415
2009	5.4780122575084915
2010	5.482146527977131
2011	5.492463742800779
2012	5.505316910366249
2013	5.513115670821608
2014	5.513405759023876
2015	5.516674202641109
2016	5.531571040989977
2017	5.551854419905854
2018	5.5733578823490175
2019	5.595197694484462
2020	5.594312257112742
2021	5.558461878094381
2022	5.517105897007199
2023	5.500533345372279