Year	% of total labor force
1991	50.38991298788795
1992	50.310484543318424
1993	50.24893282419818
1994	50.18813585888135
1995	50.18233893022563
1996	50.15487267002641
1997	50.16693975166425
1998	50.21266867674194
1999	50.285870088104055
2000	50.321159868071
2001	50.267734605087824
2002	50.22575450038529
2003	50.19236409541459
2004	50.15786913318805
2005	50.12465518248238
2006	49.8749972009997
2007	49.611929004184525
2008	49.337826241354094
2009	49.05463336219442
2010	48.75897478968762
2011	48.44762262214103
2012	48.12386092022559
2013	48.086140231421815
2014	48.07037814192761
2015	48.07656159638909
2016	48.06540202847125
2017	48.08284382788189
2018	48.12675347405374
2019	48.19474064794632
2020	48.19789531439281
2021	48.308305571012184
2022	48.410862847300315
2023	48.429156358689184