Year	% of total labor force
1992	0.5161243704895568
1993	0.5131587675678653
1994	0.24234354936604743
1995	0.49227744189975176
1996	0.5294728775216434
1997	0.967996570140525
1998	1.1001108581711778
1999	1.0147873955632631
2000	0.8334392254220246
2001	0.740923837351576
2002	0.7235106182217355
2003	0.707462630251731
2004	0.7239213138071485
2005	0.8626911394130685
2006	0.810506398808276
2007	0.7974137397687006
2008	0.7835698903812743
2009	0.7689821248779241
2010	0.7448244970893628
2011	0.5650136720845108
2012	0.5561931328306166
2013	0.5481974823385686
2014	0.5405523140965074
2015	0.5336698592681188
2016	0.5265740226786139
2017	0.5193478060801118
2018	0.5132088640831229
2019	0.5073265034751492
2020	0.5085374463044284