Year	% of total labor force
1991	35.500136233231295
1992	35.6019210179669
1993	35.90721995243612
1994	36.1190907007028
1995	36.14094135519527
1996	36.12445217644783
1997	36.08884843371889
1998	36.06920158565922
1999	36.0535333317735
2000	36.02118387121818
2001	35.989854104343955
2002	36.2218309475268
2003	36.44305451754025
2004	36.65290133447999
2005	36.859677773768865
2006	37.063565725396664
2007	36.52094091112658
2008	37.31957656340145
2009	37.82795532928904
2010	38.50055557490563
2011	38.78344991168236
2012	38.55842866563956
2013	38.717692044731706
2014	39.54807664848502
2015	39.356680879743514
2016	38.76200796626054
2017	39.31580408193476
2018	38.851277456616984
2019	40.19588811960644
2020	39.3405598671553
2021	40.61405436564408
2022	41.04091511821146
2023	41.44996814188261