Year	% of total labor force
1991	2.087372402140843
1992	1.9925916054864063
1993	1.9201634005926855
1994	1.9114129599011624
1995	1.8876962744788537
1996	1.823868231849773
1997	1.755948996343944
1998	1.669191802208523
1999	1.5022906647745689
2000	1.4117638357659672
2001	1.3513514001267397
2002	1.2903372145449892
2003	1.2592296044460727
2004	1.2439972787733269
2005	1.2436239159340718
2006	1.218466416139875
2007	1.204777663572288
2008	1.1960875805821654
2009	1.1479161146822467
2010	1.1442950017524127
2011	1.1108897690412525
2012	1.0790249577876225
2013	1.0464345126722596
2014	1.0272493216487493
2015	1.0037032669812358
2016	1.0011904059073178
2017	1.0049912382441395
2018	0.993114471495953
2019	0.9917691965165543
2020	1.000685766005368