Year	% of total labor force
1991	38.31466147101803
1992	38.34024599542334
1993	38.34123112117463
1994	38.37816826532829
1995	38.40028630222779
1996	38.407956939940824
1997	38.60048767967146
1998	38.81870231005139
1999	39.033704644115
2000	39.251326193574215
2001	39.46188779704812
2002	39.65731908209784
2003	39.91164718903
2004	40.14703179562581
2005	40.38010746871507
2006	40.6201797776714
2007	40.88439903972523
2008	41.2470872529559
2009	41.60498769259597
2010	41.96034500185304
2011	42.310449453187516
2012	42.66537880476509
2013	42.73659570637005
2014	42.82334832097865
2015	42.96184746998182
2016	43.124564294315235
2017	43.282962730974006
2018	43.43776591629922
2019	43.5828999694096
2020	43.64512782964184
2021	44.04871927807707
2022	43.72402021732893
2023	43.76514594689003