Year	% of working-age population
1960	12.555586436909394
1961	12.754222681833852
1962	12.892270072001086
1963	12.943521594684384
1964	12.928965293545247
1965	13.047613009573322
1966	13.163771712158809
1967	13.209494324045407
1968	13.127115122009142
1969	13.046257554625756
1970	13.135061080031967
1971	13.423728813559322
1972	13.793684683672321
1973	14.130980961420356
1974	14.461572585117002
1975	14.729833828546274
1976	14.953067015935384
1977	15.1539796139666
1978	15.305847480463486
1979	15.405202869071836
1980	15.537128581300163
1981	15.652403592181722
1982	15.863051276640642
1983	16.31972032416971
1984	16.87792927141031
1985	17.46907299309163
1986	18.063856135250095
1987	18.551007147498375
1988	18.975476839237057
1989	19.323539085626575
1990	19.52147306907768
1991	19.719558831679876
1992	19.975598935226262
1993	20.34320509272073
1994	20.848545193052328
1995	21.28928906811026
1996	21.50063399305364
1997	21.711865339127563
1998	22.12880536322673
1999	22.637676384999725
2000	23.059636044727032
2001	23.36632580521682
2002	23.641097971140283
2003	23.865888275935944
2004	24.06388830124815
2005	24.24068468844588
2006	24.092985066967724
2007	23.56729559748428
2008	23.050696709160984
2009	22.95968056096611
2010	23.60494303919676
2011	24.41877187095537
2012	24.921749027790952
2013	25.615344640241887
2014	26.61347770337655
2015	27.643014038773757
2016	28.630426431041105
2017	29.527901139216066
2018	30.335336305485562
2019	31.128177708647257
2020	31.95398937466491
2021	32.7044641544568
2022	33.52888976533228
2023	34.43393891391515