Year	% of total labor force
1992	0.532180417676479
1993	0.539897624612421
1994	0.5480917637154483
1995	0.49523792565421487
1996	0.5593103421001934
1997	0.5765652887043115
1998	0.8754680229916659
1999	0.9324511015778376
2000	0.9841737742589942
2001	1.045908067113245
2002	1.6818329391601554
2003	1.6283079852104305
2004	1.7661414288210313
2005	1.8763449834946342
2006	1.5980876218125644
2007	1.599565984429558
2008	1.5989606755608854
2009	1.6745940071561691
2010	1.7009140728400953
2011	1.5804631738543333
2012	1.5894701516565548
2013	1.501724417491703
2014	1.8595093202814783
2015	1.9331879859838752
2016	2.0101545005427077
2017	2.3267766137051247
2018	2.696362331102386
2019	2.5161509690581436
2020	2.502170802236535