Year	% of total labor force
1991	40.24938922028517
1992	40.21664969549475
1993	40.18955179367101
1994	40.245643376802974
1995	40.33902497745362
1996	40.38783456624446
1997	40.42678444569473
1998	40.48656163716085
1999	40.54144286318064
2000	40.56427259222589
2001	40.58453912656236
2002	40.603680371880074
2003	40.6130359671794
2004	40.64634999827893
2005	40.68659678200115
2006	40.66963571643975
2007	40.74571727873861
2008	40.83091652023411
2009	40.90360421683715
2010	40.97280775576807
2011	41.02644104641117
2012	41.08440969143326
2013	41.20747083056768
2014	41.34279433636614
2015	41.58236979662838
2016	41.71064427299398
2017	41.93798533270547
2018	41.984447578603316
2019	41.981550017376506
2020	41.92512601296852
2021	42.1587992463457
2022	41.83974625883306
2023	41.93022077846083