Year	% of total labor force
1991	2.7201407355057174
1992	2.518295800550973
1993	1.345943094561303
1994	2.0975452951796836
1995	3.6136889408886645
1996	3.7129016988347967
1997	3.7200103336670822
1998	3.7848696831659057
1999	3.2605283158246143
2000	3.2898445562901655
2001	3.19042997135206
2002	3.0171734329629145
2003	2.5579357398392775
2004	2.5344491270462695
2005	2.5892073309293306
2006	2.2257676227377297
2007	2.184864598114549
2008	2.15113409223432
2009	1.9154368993823037
2010	1.9177872232472866
2011	1.423192440290608
2012	1.4181641340593854
2013	1.406423758749264
2014	1.4086277107149219
2015	1.41893714108465
2016	0.958510578680091
2017	0.9214529708238266
2018	1.1068076910403992
2019	1.0908427290762361
2020	1.1171990069610556