Year	% of total labor force
1991	37.99572640862056
1992	38.140339593947736
1993	38.285972004582504
1994	38.42382960530151
1995	38.48142200847375
1996	38.55528275533787
1997	38.49471066097199
1998	38.42587597847065
1999	38.36293343529657
2000	38.3474558082434
2001	38.36093804690235
2002	38.367754025807976
2003	38.3244848254492
2004	38.280394086842705
2005	38.31701807724235
2006	38.71736370612251
2007	39.12966974821796
2008	39.56184186173373
2009	40.03386849516928
2010	40.49014948060053
2011	40.936015049395046
2012	40.94605585702376
2013	40.95879439327084
2014	40.98779306075207
2015	40.75428020469892
2016	40.50972376104372
2017	40.643771319000734
2018	40.776099696059056
2019	40.87662419898179
2020	41.019057786421726
2021	41.22964497262475
2022	41.0902688197729
2023	41.20123706735414