Year	% of working-age population
1960	53.6122003610241
1961	53.52843161124422
1962	53.00247278567062
1963	52.60330170146814
1964	52.89040287989276
1965	53.602651239231605
1966	53.900318478041854
1967	53.753478542882846
1968	53.543113934636544
1969	53.51162992367061
1970	53.698989151411816
1971	53.8304462039538
1972	53.71627952277156
1973	53.60931344806065
1974	53.566791453013984
1975	53.45320708339653
1976	53.2555304416651
1977	52.992675292219104
1978	52.59611724400457
1979	52.16704628203811
1980	51.846157378888826
1981	51.54298223241533
1982	51.15532384667011
1983	50.66642996182894
1984	50.004643690795916
1985	49.139573738989675
1986	48.22208039280473
1987	47.31291432061606
1988	46.376505526213634
1989	45.35052512733724
1990	44.14439010823464
1991	42.89575654734084
1992	41.684748304944826
1993	40.41066816410226
1994	39.010283956869834
1995	37.515853202465244
1996	36.11772949653294
1997	34.90271654763029
1998	33.89351961031463
1999	33.08696139995584
2000	32.37589935664572
2001	31.66879049241459
2002	31.089826889749713
2003	30.758943780061855
2004	30.46700055423703
2005	30.062751815848404
2006	29.582524945038656
2007	29.383902954482664
2008	29.71622716719607
2009	30.408917056691507
2010	31.238660338152002
2011	31.966515531926493
2012	32.44249101537342
2013	32.679538884094256
2014	32.70861571413389
2015	32.60112364838745
2016	32.4082155397801
2017	32.120133402338936
2018	31.765300610995784
2019	31.330008562799712
2020	30.910658042312594
2021	30.51465506480379
2022	30.00055273461717
2023	29.377794624024073