Year	% of working-age population
1960	15.566570680889885
1961	15.654515211254985
1962	15.675529647432175
1963	15.678361937575852
1964	15.822799489125467
1965	16.104940345589576
1966	16.410934398948562
1967	16.70872219947101
1968	16.94512433765333
1969	17.15986756417476
1970	17.50639666824609
1971	17.90792582551559
1972	18.220196938541253
1973	18.53978273634762
1974	18.893381182742143
1975	19.33726331916406
1976	19.82765886853051
1977	20.245812968711167
1978	20.564853094677225
1979	20.778987216945975
1980	20.83763284201197
1981	20.746356557702022
1982	20.62402770110905
1983	20.52591022259812
1984	20.4905521847289
1985	20.588591363835803
1986	20.78485670680388
1987	20.95591540902512
1988	21.097307401937304
1989	21.224439907071794
1990	21.304377667067214
1991	21.318594509379377
1992	21.359110096874282
1993	21.460916178923554
1994	21.59241539355559
1995	21.75164768983239
1996	21.94328814334578
1997	22.16243143557795
1998	22.37533268695817
1999	22.565694152252135
2000	22.74094691392744
2001	22.868330610983804
2002	22.91203049791134
2003	22.95301913642293
2004	23.070031220507932
2005	23.238065388079054
2006	23.47955956551362
2007	23.761409191703564
2008	24.02089859269872
2009	24.33923271749771
2010	24.6744541619628
2011	25.04873171002241
2012	25.481321144318457
2013	25.869419269131665
2014	26.226272291970137
2015	26.551378367847494
2016	26.843479686204407
2017	27.17258850834472
2018	27.5540630207264
2019	27.945419582568686
2020	28.280619723510554
2021	28.748828866482075
2022	29.414999560823514
2023	30.10066862201738