Year	% of total labor force
1991	1.770390571765339
1992	1.74203294487261
1993	1.6924168503644124
1994	1.8290777090837558
1995	2.256364292444946
1996	2.0399878106931806
1997	2.080588917738985
1998	2.0149656700223972
1999	1.9592376214567386
2000	1.8545589596131185
2001	1.942018510519479
2002	1.847806875353848
2003	1.7487769290189685
2004	1.7347841113516047
2005	1.6936299366027596
2006	1.4476600613077009
2007	1.4113645264077264
2008	1.3597803123085335
2009	1.352581682985385
2010	1.3242669289056597
2011	1.2758654825815154
2012	1.2924185219044233
2013	1.2745519427366996
2014	1.292368613520502
2015	1.2777090379265368
2016	1.4074585605058814
2017	1.3750804760213016
2018	1.3488997691306164
2019	1.3240311103900086
2020	1.287792036497382