Year	% of total labor force
1991	0.8453625290241135
1992	0.8189087858448886
1993	0.7937025872940562
1994	0.5991804068006976
1995	0.7242971299934355
1996	0.7043581960981794
1997	0.6842750825271245
1998	0.6538816143490859
1999	0.637821621552668
2000	0.5634621161368598
2001	0.556114640894318
2002	0.527943676745644
2003	0.6295479338135272
2004	0.5937409804972581
2005	0.6106269660581395
2006	0.5945688327643727
2007	0.584584086882733
2008	0.574898711924307
2009	0.5542151604932097
2010	0.5452929968799399
2011	0.535925136444811
2012	0.527273206612006
2013	0.5187741868005439
2014	0.5100252873827971
2015	0.5008715434141182
2016	0.44121519203535414
2017	0.47628895698985385
2018	0.4218852281650578
2019	0.40606594126192047
2020	0.39725401299731494