Year	% of working-age population
1960	55.73612612591167
1961	54.951250210838054
1962	54.30398275730987
1963	54.00369978423952
1964	54.06021763854931
1965	54.281003384836936
1966	54.65210552902647
1967	55.04687940897314
1968	55.24450240945901
1969	55.30912384669675
1970	55.375814273717026
1971	55.51051933178861
1972	55.73513275217047
1973	55.98002083518401
1974	56.22529803375136
1975	56.43734156805845
1976	56.45416342172428
1977	56.28744078274887
1978	55.93138373546959
1979	55.32974475388826
1980	54.491803654407
1981	53.403218202414514
1982	52.34155654884516
1983	51.55506798393977
1984	50.93744989415578
1985	50.510202730126906
1986	50.16514977558223
1987	49.64825381999679
1988	49.158367919724874
1989	48.82342485649277
1990	48.49162663083492
1991	48.25684627025074
1992	48.227502475058806
1993	48.251004173269244
1994	48.30841386131507
1995	48.456522472979465
1996	48.69003183385372
1997	48.99020553353667
1998	49.314712181368186
1999	49.63972075194972
2000	49.95369075421445
2001	50.22265193664435
2002	50.44243404206733
2003	50.63838432275987
2004	50.80518380323781
2005	50.95437133994706
2006	51.11084678148886
2007	51.35152361986296
2008	51.74055160694774
2009	52.24188374245627
2010	52.85676301581419
2011	53.58596043127582
2012	54.28405559728117
2013	54.797740449428915
2014	55.156207128061965
2015	55.452449077443646
2016	55.747333021911714
2017	56.07750026058129
2018	56.41430743578889
2019	56.72030367139318
2020	57.02471883729534
2021	57.31650450804723
2022	57.59613826407164
2023	57.893240244496255