Year	% of total labor force
1991	1.3468240925879567
1992	1.524085559550595
1993	1.5541181689290928
1994	1.5652766190382805
1995	2.1995582333042267
1996	2.1716746397939253
1997	1.9734989815236568
1998	1.9848142688230657
1999	1.9643097975653632
2000	1.9678546595589153
2001	1.5245320235080644
2002	1.517603766976418
2003	1.3717766504513407
2004	0.5971077915860157
2005	0.609783268954292
2006	0.5158387664156251
2007	0.36327234073294323
2008	0.358847162711702
2009	0.44519799911286106
2010	0.4277230332178079
2011	0.4249317216517674
2012	0.31866056474569104
2013	0.3143250007272427
2014	0.590388475616956
2015	0.58412253609753
2016	0.5756204123477079
2017	0.5548913300819167
2018	0.27629800791871917
2019	0.27007022365955596
2020	0.2693230779893201