Year	% of working-age population
1960	9.729141191360386
1961	9.965502788290406
1962	10.121563124973823
1963	10.2645838326259
1964	10.432814644054686
1965	10.665041530515836
1966	10.916585639576029
1967	11.152332622758417
1968	11.416978859493199
1969	11.659619009466097
1970	11.854003434108298
1971	12.066905075538724
1972	12.31874475905478
1973	12.547929143988863
1974	12.79844221675149
1975	13.063250339313386
1976	13.315668749637542
1977	13.592404295676765
1978	13.851517617827907
1979	14.0470283584112
1980	14.087858006717259
1981	13.920574498281518
1982	13.637074976942356
1983	13.390093957565535
1984	13.240275213096757
1985	13.10329978757891
1986	13.01414355701992
1987	13.021967189063323
1988	13.134010587298796
1989	13.362898464207507
1990	13.657223492585363
1991	14.003856313255966
1992	14.41811436103731
1993	14.868500320543122
1994	15.26171356667925
1995	15.570412083633618
1996	15.778364531430922
1997	15.897913801690002
1998	15.916062024951986
1999	15.847533546783318
2000	15.837148070139646
2001	15.93365343901643
2002	16.15719316001623
2003	16.451781274692983
2004	16.72807353539514
2005	16.927112665286135
2006	17.025273922665896
2007	16.949752951405724
2008	16.64727236228489
2009	16.291783851579023
2010	15.98851806054688
2011	15.905039048263129
2012	16.063757841677784
2013	16.313690282861877
2014	16.685585324258145
2015	17.13066931715336
2016	17.564498868825986
2017	18.01140999702191
2018	18.503177824439874
2019	19.04886785603204
2020	19.54939551188118
2021	19.903828866532773
2022	20.151348025190096
2023	20.65141966898887