Year	% of working-age population
1960	80.44866884751946
1961	84.8784907126446
1962	88.92142415822218
1963	92.3948205608433
1964	95.10160087501242
1965	97.0407729186591
1966	98.5364883584473
1967	99.42544017511514
1968	99.75160637368081
1969	99.65973514146948
1970	99.2950473530816
1971	98.66507784148958
1972	97.67154372101783
1973	96.34323869681488
1974	94.82005832329749
1975	93.20510416169616
1976	91.59182153277428
1977	90.07593777557857
1978	88.76305061249754
1979	87.80388684817262
1980	87.17541254354434
1981	86.71119110731772
1982	86.32905494409789
1983	86.04984011514246
1984	85.92919216975358
1985	85.86673153884654
1986	85.96463622548698
1987	86.32667014485985
1988	86.85450722446303
1989	87.53845649624448
1990	88.59857680630098
1991	89.75729070472714
1992	91.30533014006784
1993	93.29071192757065
1994	94.5212255922363
1995	94.97190852011553
1996	94.80775177084753
1997	93.4356883396309
1998	91.07042550748386
1999	88.2548705618996
2000	85.58803289639907
2001	83.22615045057408
2002	80.77528475522574
2003	78.38755635355881
2004	76.11288185459637
2005	73.92571928288581
2006	71.92607979754992
2007	70.2441976127321
2008	68.86923322547437
2009	67.66967847841357
2010	66.63293975307789
2011	65.9705548385006
2012	65.64411251516927
2013	65.44765934326921
2014	65.44552189071354
2015	65.55568050475853
2016	65.62140118760928
2017	65.64434085503085
2018	65.70986086598498
2019	65.84660517241593
2020	65.92166678199621
2021	65.93629654439542
2022	65.95271955357714
2023	65.87966216195223