Year	% of total labor force
1991	0.7746447232821162
1992	0.9524618741160605
1993	0.9245563360111767
1994	0.941794943760973
1995	1.461629593001913
1996	1.4256547333112082
1997	1.388234507261246
1998	1.357993754858553
1999	1.3260622260727142
2000	1.3831102969985778
2001	1.4374302119695022
2002	1.4275266828166722
2003	1.5994796807530975
2004	1.7456253900381733
2005	1.7437551767731811
2006	2.044702015249059
2007	2.091239507676426
2008	2.040590978979232
2009	2.0608703719588637
2010	2.0169191353415794
2011	1.9591849522860776
2012	1.9081122815613367
2013	1.9645866604501097
2014	1.9403463246775225
2015	2.0144487603959123
2016	1.997983660306066
2017	1.9663565791838304
2018	1.939371741088714
2019	1.9184041685127817
2020	1.6971160882520986