Year	% of total labor force
1991	10.53491197385922
1992	10.7996732158025
1993	11.066419608995004
1994	11.348607929471394
1995	11.657237438681001
1996	11.986918292877458
1997	12.785004323341365
1998	13.622657321832607
1999	14.496346400397778
2000	15.406843676788046
2001	16.349702430919653
2002	17.323023616850534
2003	18.290305690888996
2004	19.253218186200346
2005	20.246263477383295
2006	19.915583296246837
2007	19.145803421697334
2008	17.515037279510263
2009	18.22456236262199
2010	17.916290922568223
2011	16.814612209636117
2012	17.875838472929317
2013	16.1379988359883
2014	15.827280879138334
2015	17.049139387118974
2016	18.71636136474044
2017	19.61957094599235
2018	19.60477414539472
2019	19.19035461184649
2020	16.745184049419592
2021	16.15423242528429
2022	16.060432630875
2023	16.799709837475994