Year	% of total labor force
1991	0.8342997305211871
1992	0.8134115292950161
1993	0.7899580532273737
1994	0.7656147120523068
1995	0.8525085992171747
1996	0.8248990395305966
1997	0.7979572294924991
1998	0.7721074505011984
1999	0.7800109201528822
2000	0.7552347206575577
2001	0.7923399016279538
2002	0.7680627684527079
2003	0.7452248285982894
2004	0.556740174927763
2005	0.541207542268309
2007	0.5127284846309638
2008	0.4997251511668582
2009	0.5851403605439855
2010	0.5724344204817036
2011	0.5603365755030189
2012	0.5489101845710496
2013	0.5380273228208773
2014	0.5275768833395617
2015	0.5178082901107247
2016	0.5087699215222395
2017	0.4168003901251651
2018	0.524182275649986
2019	0.416002795538786
2020	0.4297470938352779