Year	% of working-age population
1960	52.32276972044011
1961	52.43738473328342
1962	52.23033473100875
1963	51.74335803437769
1964	51.286019404093786
1965	50.788882918844514
1966	50.33971967827768
1967	50.067479376487036
1968	49.65803194095055
1969	48.81460979876327
1970	47.88515097420084
1971	47.289666702467834
1972	47.223881484543845
1973	47.57852693031946
1974	48.357602486142866
1975	49.51900967172424
1976	50.72608556593404
1977	52.01615695194216
1978	53.23161319078707
1979	54.243724391243795
1980	54.678758939127505
1981	54.27139217361135
1982	53.39851357749011
1983	52.24368473861978
1984	51.51322987880186
1985	51.48076473886823
1986	51.66926497668797
1987	51.85535485268612
1988	51.924358451601215
1989	51.48201128182479
1990	50.604793488708765
1991	49.845119308112906
1992	49.18897617630107
1993	48.61644601794901
1994	48.188849984820585
1995	47.92270929902672
1996	47.67433683780273
1997	47.40998280871084
1998	47.23683808590117
1999	47.01074715417465
2000	46.676161644455455
2001	46.23952932678491
2002	45.889202360684365
2003	45.65487126372621
2004	45.41144071076357
2005	45.22554876023515
2006	45.08096923376553
2007	45.0580165421111
2008	45.15184843180232
2009	45.34315044128696
2010	45.45724963083035
2011	45.585791535645114
2012	45.996744626868306
2013	46.62769472286958
2014	47.45621695151945
2015	48.32482184646775
2016	49.20848543267162
2017	50.00752492266648
2018	50.8015934219435
2019	51.8855547745408
2020	53.03266875792423
2021	53.78308294070162
2022	52.56039300045073
2023	51.806097177777765