Year	% of total labor force
1991	1.5542637896503795
1992	1.4999828573387732
1993	1.4460509381771907
1994	1.3956288903155316
1995	1.6380521440175444
1996	1.5836964966770322
1997	1.533841967359843
1998	1.663648749461503
1999	1.7007901871209363
2000	1.6543117153392746
2001	1.5991454166893213
2002	1.6260716586550377
2003	1.5773344549933903
2004	1.4587764366759737
2005	1.5592817664677874
2006	1.5155773798698255
2007	1.4507203485949114
2008	1.388650433763899
2009	1.2695787175078532
2010	1.302972017124775
2011	1.2622043136132943
2012	1.225239942822136
2013	1.1900255458817182
2014	1.1552909022491862
2015	0.9605245744876135
2016	0.9305778578304508
2017	0.9008657319684217
2018	0.8726130397475239
2019	0.8461660685526142
2020	0.8497010940373642