Year	% of total labor force
1991	0.6522892793881216
1992	0.6163218685180393
1993	0.5921651110506034
1994	0.5496283167779269
1995	0.7507922281963874
1996	0.7426393043597924
1997	0.6690733669853215
1998	0.6801294765838276
1999	0.6676389613221052
2000	0.6687392805905475
2001	0.636712519046351
2002	0.6349058549727061
2003	0.6323820902542253
2004	0.5955549694730454
2005	0.6141437463114747
2006	0.5968840820091984
2007	0.5227111775789298
2008	0.5202587876876968
2009	0.5257328813873419
2010	0.5265055695421564
2011	0.5348054265668019
2012	0.5342948317736705
2013	0.5329533468491086
2014	0.5301875738926835
2015	0.5143934687702366
2016	0.4999376318558229
2017	0.49901135983749545
2018	0.4972259667049438
2019	0.48124349729299587
2020	0.48339201680751487