Year	% of working-age population
1960	67.50914224876175
1961	68.13009240293141
1962	67.93301563265489
1963	67.23138072587477
1964	66.49936467598475
1965	66.1663008820241
1966	66.35107679804958
1967	66.96333926678534
1968	67.74225360446539
1969	68.35081029551954
1970	68.71429390297496
1971	68.68581439994036
1972	68.12969839688434
1973	67.11065033650213
1974	65.7453765198733
1975	64.24997936101708
1976	62.89745851038243
1977	61.74355294154354
1978	60.609559694916285
1979	59.64868107291497
1980	59.17271638258259
1981	58.933434402987174
1982	58.42298305177186
1983	57.52728716015082
1984	56.254807445772016
1985	54.72009530782691
1986	53.262150397999186
1987	52.087055004845475
1988	51.25879451245156
1989	50.661976051226844
1990	50.77644492911668
1991	51.63389538328934
1992	52.48689984237209
1993	53.168806567038516
1994	53.6637841433501
1995	54.01522769716994
1996	54.27584250309035
1997	54.41338322694255
1998	54.472436277415525
1999	54.53321495819471
2000	54.781482805600376
2001	55.177250456335855
2002	55.45111164236194
2003	55.50997487245869
2004	55.268589173120255
2005	54.7226979317613
2006	53.95992857076076
2007	53.01454336076079
2008	51.99538638985006
2009	51.05041438365594
2010	50.9731936866005
2011	51.7029479911716
2012	52.608408540611926
2013	53.596417833598444
2014	54.57707495294682
2015	55.64182866037841
2016	56.75695808851601
2017	57.86137612703287
2018	58.86341803386765
2019	59.81404958677686
2020	60.40701036009138
2021	60.65624735042252
2022	61.01497909675484
2023	61.47985621586294