Year	% of total labor force
1991	1.0349382428969798
1992	1.01101195602726
1993	0.9418247698524325
1994	0.893465378477323
1995	0.809746343308887
1996	0.7641477372115987
1997	0.7493778101667881
1998	0.7478516075790712
1999	0.7455804521664995
2000	0.7200508406720633
2001	0.7160785236669371
2002	0.7051120050647418
2003	0.706427456462753
2004	0.6756402902959366
2005	0.7042434530023618
2006	0.5779427664236326
2007	0.5074958082432164
2008	0.5011311155692292
2009	0.5562419276820042
2010	0.539828113045752
2011	0.5100364960132481
2012	0.5160418543350063
2013	0.48137650632811235
2014	0.46412725355232853
2015	0.45323239633175383
2016	0.4426968224179667
2017	0.4336518144533981
2018	0.43134716825015196
2019	0.4294451456313338
2020	0.44177118019950384