Year	% of total labor force
1991	39.00137321145363
1992	39.01933230091494
1993	38.95642513731246
1994	39.01815702961405
1995	39.02321030766145
1996	38.98977714130089
1997	38.96140782277978
1998	38.97163270072252
1999	38.99230009113467
2000	38.96889605105622
2001	38.954693970975285
2002	38.93895039594071
2003	38.94988334987725
2004	38.92306995635745
2005	38.97457198692556
2006	38.86496331202323
2007	38.841451903444316
2008	38.66351212941366
2009	38.577838089273214
2010	38.38120011551878
2011	38.29083395236124
2012	38.23120582635645
2013	38.194652222658625
2014	38.18580933482605
2015	38.232389791977084
2016	38.29491109268773
2017	38.33561594609547
2018	38.34977429618057
2019	38.40304155346725
2020	38.1449293759758
2021	38.41351533969727
2022	38.31592601863351
2023	38.81733472197628