Year	% of total labor force
1991	9.334159979641706
1992	8.4826943661787
1993	8.035355564483728
1994	7.861692014603198
1995	7.292548293171087
1996	7.282222931724033
1997	7.127506585217697
1998	7.011533692152426
1999	6.7228935963081184
2000	6.503574083275293
2001	6.023766304561624
2002	5.899678319604544
2003	5.9448851397234845
2004	5.82188472932867
2005	5.675012051339513
2006	5.81626573732172
2007	5.664008562756297
2008	5.565471454095239
2009	5.422031162503459
2010	5.299143924806426
2011	5.226504025300187
2012	4.960104094975912
2013	4.883934423452203
2014	4.756596329196684
2015	4.673402614521795
2016	4.583329400033486
2017	4.35037850737047
2018	4.257747481272508
2019	4.215565050313243
2020	4.24486174986079