Year	% of working-age population
1960	71.43751297795971
1961	72.38141693642558
1962	74.23095083515317
1963	76.24983729928648
1964	79.90731656784902
1965	84.64444856443271
1966	87.74283588869213
1967	88.11926665704274
1968	86.78133323089531
1969	86.63923652780159
1970	86.49418765917744
1971	86.4185684809944
1972	86.50741242633735
1973	85.36764502518369
1974	85.25397645912432
1975	86.94010922209722
1976	90.03027945469874
1977	94.04345125314163
1978	98.22964680280802
1979	99.61078717201165
1980	99.95502905075224
1981	101.85742168369603
1982	103.74202121348742
1983	105.48917075928345
1984	106.9800682919082
1985	108.15277845228101
1986	109.00379769120494
1987	109.56345086000631
1988	109.86456775617745
1989	109.93180020725026
1990	109.71352500597766
1991	108.54136284949902
1992	106.6656430066511
1993	104.98197998983588
1994	103.35162897118298
1995	101.56547405339968
1996	99.69920915468668
1997	97.85320869813864
1998	96.15792403318578
1999	94.61204184934623
2000	93.12797435523275
2001	91.75825935511224
2002	90.5906821470079
2003	89.63547522269307
2004	88.83550812814374
2005	88.24404213720378
2006	87.84243504643288
2007	87.48749499153408
2008	87.07635613170494
2009	86.5628466300837
2010	85.98927181239912
2011	85.43364392276177
2012	84.89890350607318
2013	84.3591288909159
2014	83.77908263844232
2015	83.10421240640945
2016	82.324242722393
2017	81.37220848939549
2018	80.2654879687595
2019	79.10128413949565
2020	77.88095248600258
2021	76.59708665479482
2022	75.23354724666001
2023	73.83631837579206