Year	% of working-age population
1960	10.355518301164063
1961	10.571041441422285
1962	10.809392158139971
1963	11.048771466253983
1964	11.313467682417722
1965	11.598885974405635
1966	11.903170986329739
1967	12.21742925307756
1968	12.52108345873783
1969	12.812309893318854
1970	13.075604873228327
1971	13.328601689781491
1972	13.631684712511802
1973	13.976933308735754
1974	14.373094324335145
1975	14.8408559141003
1976	15.34907149733641
1977	15.915686271687326
1978	16.4376503994627
1979	16.845171518356675
1980	17.04879974653108
1981	16.961580633035283
1982	16.44399074908466
1983	15.601060272477271
1984	15.149281987800276
1985	15.115182635880458
1986	15.18986733631632
1987	15.376789935574228
1988	15.571862556693144
1989	15.773627231662793
1990	15.990513897016706
1991	16.195003510011226
1992	16.47285323342817
1993	16.865386615510847
1994	17.270576046162773
1995	17.683665513693654
1996	18.080893653777807
1997	18.48628374054266
1998	18.897544272581463
1999	19.2652193973697
2000	19.63337536726749
2001	20.027236673813224
2002	20.42371643927811
2003	20.784297829177333
2004	21.099256660689434
2005	21.33982664161891
2006	21.565157252353337
2007	21.811316836104215
2008	22.08483497138345
2009	22.45885534633669
2010	22.844928408218795
2011	23.161448901215138
2012	23.422786290299875
2013	23.724972838283225
2014	24.262148791475894
2015	24.95174603849154
2016	25.646269803210668
2017	26.383245667657267
2018	27.155980251201868
2019	27.91843770134923
2020	28.617215320083933
2021	29.09109779634224
2022	28.487757914182044
2023	28.097233524099437