Year	% of working-age population
1960	42.258686561553866
1961	42.35455487232841
1962	41.91860275860262
1963	41.43473382791723
1964	41.00055316541988
1965	40.59406693173327
1966	40.26239858274383
1967	39.97455021990973
1968	39.705662816983114
1969	39.47565942881265
1970	39.26301260301905
1971	39.108814086517086
1972	38.98645654351952
1973	38.81574607769588
1974	38.52075079698674
1975	38.07118112674651
1976	37.4891780282003
1977	36.90796784761999
1978	36.33694234114397
1979	35.73268562356844
1980	35.15100543282664
1981	34.557197726938156
1982	33.99127407013131
1983	33.431102221152386
1984	32.85678384542857
1985	32.38621934971116
1986	31.95627658137048
1987	31.457364909431362
1988	30.990466334773455
1989	30.646258166661973
1990	30.461655822402967
1991	30.40418303757924
1992	30.321530382712307
1993	30.150209956569906
1994	29.92209485003287
1995	29.642725618966626
1996	29.339125632043526
1997	29.051973497307426
1998	28.876172514855952
1999	28.797649611423033
2000	28.735434412974186
2001	28.661193792818352
2002	28.556909186975883
2003	28.436641214590548
2004	28.31524573941877
2005	28.194232581811185
2006	28.083705254008372
2007	28.01689946542507
2008	28.049663600691783
2009	28.168290470896277
2010	28.282605569942138
2011	28.42536595683796
2012	28.630918712100435
2013	28.81903174551153
2014	28.95144566117111
2015	29.002571991166683
2016	28.966328301700443
2017	28.90775155003719
2018	28.834531368924242
2019	28.726254084054926
2020	28.568744830124576
2021	28.34000075393937
2022	28.12933686357256
2023	27.95524579467666