Year	% of working-age population
1960	90.76705290200807
1961	84.57113933370145
1962	77.63955594047712
1963	71.9889278963003
1964	67.6731172767545
1965	64.58703487486675
1966	62.27441230659948
1967	60.45150501672241
1968	59.11532277376757
1969	58.24400436046512
1970	61.07531871911769
1971	65.40239598349655
1972	66.84175008435497
1973	66.12014650528089
1974	63.971576723641256
1975	61.05280541678708
1976	57.84748666462178
1977	54.618960436134955
1978	51.527251693318156
1979	48.70495913553523
1980	46.27985448410397
1981	44.33714299698979
1982	42.80793600760161
1983	41.54205947735654
1984	40.404068911852335
1985	39.321495618928665
1986	39.08146746939741
1987	39.59203459310597
1988	39.868935020684646
1989	39.81829019854449
1990	39.57313546976271
1991	39.235811389930184
1992	38.873206235082655
1993	38.516629143036276
1994	38.171180991541675
1995	37.82011493637833
1996	37.41182396207359
1997	36.64342085670323
1998	35.4700914487705
1999	34.22113478095305
2000	33.08190898452308
2001	32.11018280116068
2002	31.373982946099137
2003	30.732795282948018
2004	30.68917552271101
2005	28.734661064510746
2006	23.632058638325134
2007	19.958108392343828
2008	18.369583212445765
2009	17.405331628207772
2010	17.199208778942356
2011	17.73116103700678
2012	18.35080550000621
2013	18.655794602869072
2014	18.204722391995368
2015	17.485683923809134
2016	17.2825373698225
2017	17.468872496251876
2018	17.818406661494134
2019	18.71044813988646
2020	19.91486363324376
2021	20.72139068892272
2022	20.967000631064344
2023	20.922296321258123