Year	% of total labor force
1992	1.5117440523866041
1995	2.0939116347541487
1996	2.1221084334187585
1997	2.056172482907465
1998	2.1388758865465047
1999	2.1128324973231383
2000	2.1332628360917965
2007	1.7375995778219597
2008	1.7246110709219087
2009	1.6246252951565088
2010	1.6336688179807737
2011	1.5851925627959491
2012	1.566206830132031
2013	1.5518848877206064
2014	1.5676167052089076
2015	1.5615582384300546
2016	1.6374700730208325
2017	1.5491740456272525
2018	1.6063440794331667
2019	1.5385745218086593
2020	1.51794763145265