Year	% of total labor force
1991	42.95165294244994
1992	42.910205250827985
1993	42.886452051318244
1994	42.88064963258095
1995	42.885666237769584
1996	42.820069433648314
1997	42.782225619829354
1998	42.764513996154946
1999	42.74855098330417
2000	42.72836842221417
2001	42.67276634948592
2002	42.630310512522755
2003	42.59956546061132
2004	42.579122870801406
2005	42.56511831563971
2006	42.49611411664564
2007	42.44148360450814
2008	42.39963456596358
2009	42.36979454275342
2010	42.35390668514399
2011	42.28084162595616
2012	42.23185163773522
2013	42.20644019280143
2014	42.1992253428352
2015	42.98783025947795
2016	42.23495572682478
2017	41.46213508579563
2018	40.36381632199193
2019	39.260671774760965
2020	38.060912608654604
2021	38.15392567374738
2022	37.97857959941144
2023	38.20674963252076