Year	% of total labor force
1991	4.973993294086505
1992	4.903749765421585
1993	4.957626260616128
1994	4.680882005417098
1995	4.498526832776293
1996	4.329941545789132
1997	3.6006621061166872
1998	3.61989013161291
1999	3.54397485616707
2000	3.395747533661492
2001	3.4217839319568197
2002	3.7714125269045424
2003	3.733036115685474
2004	3.3845343802826346
2005	3.3904975252395295
2006	3.228193154225424
2007	3.2350761016489047
2008	3.2309918342200166
2009	2.8477203952014944
2010	2.9759159750729975
2011	3.001546600756062
2012	3.0112319872741473
2013	3.078484934851653
2014	3.071106726967222
2015	3.0906397676898902
2016	3.0727762803234504
2017	3.0999732892712473
2018	3.157668574865257
2019	3.1381074692935114
2020	3.196035698196827