Year	% of working-age population
1960	63.58528496426317
1961	64.09459086691577
1962	64.10012962898084
1963	63.632940983191354
1964	62.79365356173893
1965	61.678639166264645
1966	60.3637544018414
1967	58.901764938817855
1968	57.34030117582341
1969	55.73781741065448
1970	54.13141051608199
1971	52.59544835113632
1972	51.208566451608874
1973	49.95171385262334
1974	48.77695348329982
1975	47.65490457948196
1976	46.57744953451931
1977	45.558386086284806
1978	44.6203285933412
1979	43.79194259263361
1980	43.09097362529351
1981	42.428199134896964
1982	41.76933936747107
1983	41.19426821774965
1984	40.71158360430454
1985	40.295294144402526
1986	39.92769723215967
1987	39.58767685919592
1988	39.263377171594406
1989	38.959571670674336
1990	38.685468045478835
1991	38.41232192064101
1992	37.95419847328244
1993	37.35669553565027
1994	36.796013816533986
1995	36.24592759679576
1996	35.67271195666899
1997	35.037710736468505
1998	34.342918596792416
1999	33.63204579380451
2000	32.94851301482052
2001	32.331319815518896
2002	31.774849035070783
2003	31.297143051923705
2004	30.934889413963358
2005	30.60408463070745
2006	30.209263934744612
2007	29.754947022110407
2008	29.332363264922634
2009	28.97169813583264
2010	28.57493916113948
2011	28.14005156292697
2012	27.807564018010922
2013	27.596292061805293
2014	27.508126758421415
2015	27.48759214960493
2016	27.4415198380218
2017	27.40658891918185
2018	27.422096043724714
2019	27.52388724540107
2020	27.657576817093776
2021	27.732972040891735
2022	27.687746202683844
2023	27.514227718210233