Year	% of working-age population
1960	73.73706518752506
1961	73.93233332928051
1962	74.4636483098895
1963	75.54913326321356
1964	76.45903557759772
1965	76.88460020313846
1966	77.10333665073995
1967	77.01985095267048
1968	76.85177717720597
1969	76.72664317853075
1970	76.4653944734887
1971	76.20052968338904
1972	75.78071742994626
1973	75.32344603600272
1974	75.09104194633132
1975	74.88095431959923
1976	74.61213811375832
1977	73.84568420817376
1978	72.3296349007804
1979	70.80375800285546
1980	69.53627126740713
1981	68.39054624084494
1982	67.47411998446128
1983	66.4970006222035
1984	65.41469507010686
1985	64.426874857351
1986	63.54707489205276
1987	62.83180361151717
1988	62.170119773838046
1989	61.592302227320026
1990	61.18095619612803
1991	60.73913929497926
1992	60.25684150146055
1993	59.778922169128336
1994	59.16390714290442
1995	58.41009865028535
1996	57.56296710982712
1997	56.5857908881512
1998	55.586820236472334
1999	54.61584294686081
2000	53.62332952912367
2001	52.59461678657077
2002	51.53325744675489
2003	50.506037310913165
2004	49.50830051420614
2005	48.518218648777946
2006	47.66630505685812
2007	47.00306185529486
2008	46.44888583158323
2009	45.97222981724146
2010	45.54354283074862
2011	45.16622323873248
2012	44.86824267324104
2013	44.62556214140555
2014	44.402118197827654
2015	44.16596572846299
2016	43.91627751259812
2017	43.68523235316301
2018	43.42678104545786
2019	43.11179862916787
2020	42.74083475071307
2021	42.321510197276844
2022	41.90697602953482
2023	41.43260118046892