Year	% of working-age population
1960	4.100618981968026
1961	4.228224929046983
1962	4.352706358822846
1963	4.473511728959485
1964	4.595823200184915
1965	4.714802615065589
1966	4.823927858885826
1967	4.924923045200819
1968	5.017867698184125
1969	5.104734063807862
1970	5.186939685078662
1971	5.261799029226479
1972	5.33037760222264
1973	5.394173167875784
1974	5.451274086148831
1975	5.502008752957788
1976	5.5465085508734076
1977	5.585780210831109
1978	5.620614695436602
1979	5.650010422401214
1980	5.673869293919353
1981	5.692777607107065
1982	5.7079889134442805
1983	5.719538194374571
1984	5.728161356140709
1985	5.735088802487471
1986	5.739917665292264
1987	5.742767431720728
1988	5.745551401243996
1989	5.766789524886699
1990	5.785772469405362
1991	5.783201607601745
1992	5.735304341005955
1993	5.677331321635958
1994	5.650080519246961
1995	5.65143414671414
1996	5.6858328207820295
1997	5.706700784605201
1998	5.707686469407185
1999	5.702587843825162
2000	5.6914323029246106
2001	5.6978977675298665
2002	5.720782058254814
2003	5.740685442690177
2004	5.754218129334679
2005	5.772899394256982
2006	5.796766940554288
2007	5.814568073383162
2008	5.989130233591234
2009	6.3134818321428074
2010	6.6263599262864
2011	6.924241023733929
2012	7.203342381146902
2013	7.197727739304366
2014	6.941482790544449
2015	6.724938990501942
2016	6.5483105536710955
2017	6.40333921693901
2018	6.285886301536246
2019	6.192641538479757
2020	6.083923581726007
2021	5.955298441930496
2022	5.842292768297971
2023	5.766555442047637