Year	% of total labor force
1991	1.7688001344288102
1992	1.7141081816526145
1993	1.661350345560872
1994	1.6118503235789525
1995	1.598459164301868
1996	1.5872370654696575
1997	1.1223728865147848
1998	1.680181976632546
1999	1.6316314162560692
2000	1.5854625282029393
2001	2.5386552573857943
2002	2.469448802564276
2003	2.4057044062881903
2004	2.3447428520514157
2005	2.2817540299579093
2006	2.217862069679312
2007	2.1565233393332606
2008	2.0980928336142446
2009	2.0702270031148746
2010	2.018455589329275
2011	1.9708853554141648
2012	1.9254642649033469
2013	1.7617734567965626
2014	1.7527796548407852
2015	1.7247561512520369
2016	1.7764112693743346
2017	1.778801576907598
2018	1.7604834575452217
2019	1.7416292942047285
2020	1.7476406850751487