Year	% of working-age population
1960	51.39740950907722
1961	51.71154582049407
1962	51.34887471356713
1963	50.97981811899176
1964	50.952601955556545
1965	51.082563940985295
1966	50.282392171811516
1967	49.01820747296364
1968	47.99573775795366
1969	46.82449882999348
1970	45.68318587947897
1971	44.49034898519083
1972	43.14217077061333
1973	41.705710323110004
1974	40.32027950938762
1975	38.9688094843737
1976	37.65483959189911
1977	36.48837520911564
1978	35.461783537530174
1979	34.58447766753198
1980	33.92147481886522
1981	33.479325393697316
1982	33.174857151674345
1983	32.87459794445941
1984	32.58569258696039
1985	32.30231180688962
1986	32.044102878999325
1987	31.970722174635984
1988	32.123557070224265
1989	32.35081236363337
1990	32.58315225711916
1991	32.85968457945066
1992	33.11294211954371
1993	33.26319028039998
1994	33.29651005686259
1995	33.208247678257294
1996	33.045152683593834
1997	32.881526912895595
1998	32.7369900288177
1999	32.575749255713376
2000	32.336832549431755
2001	32.04770046702368
2002	31.75470726158767
2003	31.458869386761805
2004	31.123862125431856
2005	30.749299897007077
2006	30.40495258968153
2007	30.144459798849688
2008	29.966783188454393
2009	29.799976392164
2010	29.60569971795089
2011	29.47452942840388
2012	29.416284444335194
2013	29.34713213788595
2014	29.234031823124145
2015	29.072895424162652
2016	28.98442246939757
2017	28.92617531793183
2018	28.787719703609522
2019	28.616529964442748
2020	28.36325503531344
2021	28.032538041311426
2022	27.667174141332147
2023	27.302415172640032