Year	% of total labor force
1991	2.5026352005304595
1992	1.935701864668957
1993	1.7047117746390517
1994	1.2704390877192646
1995	1.1232676808758442
1996	1.1009879404962388
1997	1.0510478201930287
1998	1.0235481660218548
1999	0.9550346797682937
2000	0.8898398627880517
2001	0.912932429329414
2002	0.8980438451579973
2003	0.9267634286430775
2004	0.8025254584482413
2005	0.7997096837710158
2006	0.8608068816345346
2007	0.8247258738076367
2008	0.8163516491245257
2009	0.8230195323826563
2010	0.730206959401956
2011	0.6982066035375801
2012	0.6251313386688735
2013	0.7557360365171654
2014	0.7551829450769101
2015	0.7285157498691779
2016	0.6763805316871272
2017	0.6291373151171867
2018	0.6123558242231635
2019	0.5005385602393344
2020	0.46446926258537524