Year	% of total labor force
1991	15.635824570477402
1992	15.697530733436427
1993	15.915246028010287
1994	16.070685521422956
1995	16.254013534084656
1996	16.39488228193376
1997	16.029137351100886
1998	15.845845591248342
1999	15.79696029595582
2000	15.694669164076313
2001	15.807896881669265
2002	15.851730801770431
2003	16.02222838976636
2004	16.11354208103654
2005	15.62959324747144
2006	13.740673076508441
2007	12.135712898169022
2008	11.05958439295536
2009	10.947588389340538
2010	11.910397268583077
2011	12.888874953059897
2012	13.40458408447077
2013	13.611906598377828
2014	13.540825435252755
2015	13.41842396114504
2016	13.51099204626662
2017	13.972555331952611
2018	14.632638562995975
2019	15.513082877388493
2020	15.981838874967638
2021	16.223536531717862
2022	16.874950274484842
2023	17.12088180972638