Year	% of total labor force
1991	0.5851210341248606
1992	0.5636391065824158
1993	0.5431186555982188
1994	0.5286778745167657
1995	0.5559388624914344
1996	0.5446813429238913
1997	0.5200670470437049
1998	0.5103914078883732
1999	0.5151382371345841
2000	0.5412822110779213
2001	0.5249294751583565
2002	0.5179575606720059
2003	0.5039954374316867
2004	0.4868056251325226
2005	0.473053438435295
2006	0.6283176433815812
2007	0.628760111880607
2008	0.6610170013139284
2009	0.706851424028099
2010	0.69527690799178
2011	0.6761851526391347
2012	0.6553970831798773
2013	0.636333834905303
2014	0.6505742544700723
2015	0.6373746559732124
2016	0.6273347123309587
2017	0.6188687330055146
2018	0.6286100483496864
2019	0.5772757004505831
2020	0.6417265024878099