Year	% of total labor force
1991	0.7978358936043598
1992	0.7915446271696762
1993	0.7887708722692288
1994	0.7400157361500078
1995	0.6358716937873553
1996	0.6459364282110318
1997	0.6373886275243836
1998	0.6309844253811756
1999	0.6016908369016347
2000	0.5417457062453201
2001	0.5332950433681306
2002	0.5172200752113184
2003	0.5351751345650948
2004	0.5134450523941054
2005	0.5082196863018781
2006	0.47869578488650405
2007	0.5027148429573672
2008	0.48973868345241556
2009	0.49281255476409147
2010	0.48481053579914135
2011	0.481602895999353
2012	0.4679438870333498
2013	0.4659032312010509
2014	0.4606268729961209
2015	0.4603213361487796
2016	0.4540320441363136
2017	0.44588559452040427
2018	0.4365601792947396
2019	0.43422381352574796
2020	0.44159855438297235