Year	% of working-age population
1960	14.100491076775661
1961	14.34463659664732
1962	14.545121056493029
1963	14.703874381293735
1964	14.74472240305031
1965	14.747480270472233
1966	14.729118127527382
1967	14.688746588284696
1968	14.728422714828831
1969	14.840284876697051
1970	14.988478108405973
1971	15.065936595632728
1972	15.02854845195014
1973	15.001377356263035
1974	15.01888828926066
1975	15.050265668397536
1976	15.173580956198366
1977	15.349974737674549
1978	15.513496742165684
1979	15.65222334332855
1980	15.737525900207203
1981	15.731010261001307
1982	15.719457319755051
1983	15.770957984089124
1984	15.829907587068767
1985	15.949095169899753
1986	16.171823610591616
1987	16.3002033553635
1988	16.273204511062815
1989	16.326054526591076
1990	16.503274942878903
1991	16.625635778132242
1992	16.770589145257446
1993	16.97627606887555
1994	17.179518685600943
1995	17.447893969238994
1996	17.6719985694426
1997	17.799361985036892
1998	17.82633406299062
1999	17.781633535483444
2000	17.745949958517095
2001	17.76474702100761
2002	17.84767259831954
2003	17.889796994463484
2004	17.868966809644775
2005	17.696359056560567
2006	17.380492801008447
2007	17.14401429422275
2008	17.148507831668113
2009	17.538564878089737
2010	18.127935374788652
2011	18.66042194172112
2012	19.199029012470067
2013	19.705609891209726
2014	20.195076037206555
2015	20.697299199678227
2016	21.045141766041
2017	21.12419836319243
2018	21.181560482619986
2019	21.40702349880286
2020	21.840580125072087
2021	22.462872287131752
2022	23.1534984160131
2023	23.862940349390396