Year	% of working-age population
1960	48.80908972947268
1961	47.42885279313242
1962	45.84344229707499
1963	44.35000820925831
1964	43.03708252001538
1965	41.88541562414626
1966	40.90062164887949
1967	39.96767217421054
1968	39.04302532315273
1969	38.15445586097366
1970	37.16842878539194
1971	36.06207676046475
1972	34.9829463698289
1973	34.05791087236599
1974	33.292338534667216
1975	32.67091358793228
1976	32.13916407628803
1977	31.647015264277535
1978	31.101724878698516
1979	30.517312628284955
1980	29.990644116143965
1981	29.5022799735011
1982	29.08175546426859
1983	28.783027765699508
1984	28.594044341944436
1985	28.501134891210388
1986	28.46553445716703
1987	28.46525419675738
1988	28.595465811211994
1989	28.717500221107255
1990	28.7036162357665
1991	28.632291453379505
1992	28.564777257367783
1993	28.545882627302554
1994	28.539724407123945
1995	28.506397691921226
1996	28.39486551314867
1997	28.156288590964373
1998	27.7840055881765
1999	27.40734974114332
2000	27.122705775856492
2001	26.90055009594563
2002	26.715855107229803
2003	26.51088061394295
2004	26.293177083512482
2005	26.025677150102677
2006	25.77580371719738
2007	25.516142077220184
2008	25.24482140110561
2009	25.07846974968601
2010	25.017339952659533
2011	25.0974824910089
2012	25.255186281730197
2013	25.45999784516299
2014	25.656293379744437
2015	25.78694789220378
2016	25.843601700065626
2017	25.855558037764542
2018	25.788403617963198
2019	25.58247708625327
2020	25.322052056992746
2021	25.014081144257922
2022	24.650335081231503
2023	24.26144775641978