Year	% of total labor force
1991	0.8535663634333331
1992	0.7927828271690613
1993	0.7752854341749853
1994	0.7242060723291797
1995	1.0217889855151745
1996	1.0134921045130834
1997	0.9986184392544007
1998	0.9707561975690746
1999	0.9435136974627097
2000	0.9311632028174974
2001	0.9195812669267628
2002	0.9188785134599347
2003	0.9125370957774205
2004	0.8982198586649338
2005	0.951204209819079
2006	0.9375410461762835
2007	0.8664720178723025
2008	0.8490645846480321
2009	0.8415282363704412
2010	0.8263371312013246
2011	0.8142876926106943
2012	0.8127624880127448
2013	0.7949996245911977
2014	0.7739318452831233
2015	0.7743256098490353
2016	0.7842206730643735
2017	0.7753981488162377
2018	0.7655224376300775
2019	0.7647467278431141
2020	0.7514204708958512