Year	% of total labor force
1991	0.6777813482033566
1992	0.647987933881482
1993	0.6668441047301732
1994	0.6062590597647356
1995	0.9849553035215788
1996	0.9253884462204075
1997	0.8692244398324422
1998	0.8705497121042808
1999	0.8838419406994766
2000	0.890780869492427
2001	0.78080342800629
2002	0.7314140300666478
2003	0.6742201138065258
2004	0.6468162051735253
2005	0.6289701007216925
2007	0.5928586887900563
2008	0.5816980738688137
2009	0.5739610813507166
2010	0.6198454940096445
2011	0.6880652892771918
2012	0.6704144964452076
2013	0.6423823744219231
2014	0.6290302691852495
2015	0.6052819004539635
2016	0.5386553259082659
2017	0.5146605926585414
2018	0.5117365636094701
2019	0.4971661271809992
2020	0.43566506248618736