Year	% of total labor force
1991	35.23268351657213
1992	35.64694413461964
1993	36.11852337723721
1994	36.61486005137393
1995	37.1848003785859
1996	37.33781780750923
1997	37.79789278364912
1998	38.084711571715964
1999	38.32318874523512
2000	38.54863639516633
2001	38.939021116611734
2002	39.275182108843765
2003	39.57840783251414
2004	39.984182738898355
2005	40.253979115493806
2006	40.41920612927763
2007	40.53738541247341
2008	40.544125994945645
2009	40.885283425381736
2010	40.784373762475
2011	40.6356017835319
2012	40.802666433551934
2013	40.82727450700228
2014	40.75903862335211
2015	40.944770853962275
2016	41.144954230620414
2017	41.32753523914702
2018	41.553989550531796
2019	41.83163883597137
2020	41.20000679141422
2021	41.60004560146372
2022	41.90415204857849
2023	42.0143382258229