Year	% of working-age population
1960	72.27682333094366
1961	71.97049365209952
1962	72.30056119742656
1963	73.63944355854187
1964	74.80387898420953
1965	75.30927879719773
1966	75.51903030963477
1967	75.23674973199259
1968	74.87172542185884
1969	74.64326699100249
1970	74.22579296916112
1971	73.80489147947449
1972	73.12658729459284
1973	72.43886650022553
1974	72.18582306927598
1975	72.01431200759879
1976	71.73992942240548
1977	70.58071770786643
1978	68.10606235267741
1979	65.59484092403027
1980	63.52674487568181
1981	61.65435461568257
1982	60.16565734345318
1983	58.56516833889804
1984	56.76204113482507
1985	55.13672912976659
1986	53.73831428030622
1987	52.66541032181527
1988	51.73434759449061
1989	50.96363025990406
1990	50.47171828227218
1991	49.980922359354885
1992	49.396595380873784
1993	48.82056142050199
1994	48.10367817579759
1995	47.21470511933422
1996	46.1824946282498
1997	44.95943524215068
1998	43.75426976430715
1999	42.61873286449947
2000	41.42784318713312
2001	40.1444721677089
2002	38.74497708657602
2003	37.381929636552776
2004	36.09059182099573
2005	34.81289709578617
2006	33.76905857906182
2007	33.04540835875747
2008	32.4963572659261
2009	32.07163760531055
2010	31.72372467070387
2011	31.458610067865994
2012	31.31763749923506
2013	31.253768842680866
2014	31.235255907869714
2015	31.211484467521007
2016	31.19218885545808
2017	31.247831074619324
2018	31.2464465452253
2019	31.12285155320402
2020	30.88517177578259
2021	30.512140769781915
2022	30.094366638116337
2023	29.592736660679424