Year	% of total labor force
1991	1.7005415547645113
1992	1.7098045943923421
1993	1.6901875201857202
1994	1.6446645988695652
1995	2.3648533152210542
1996	2.2163247045751975
1997	2.1026104135184234
1998	2.038609155237276
1999	1.9603352718635971
2000	2.026177903327765
2001	1.9646395178584217
2002	1.906463849953367
2003	1.8510347508254719
2004	1.8178917737377287
2005	1.779802935426469
2006	1.7471017418169013
2007	1.6944498176635852
2008	1.6468497534445983
2009	1.5864646214685938
2010	1.5699848373652543
2011	1.5370640325440326
2012	1.4979804921784177
2013	1.462597713039131
2014	1.418382171662299
2015	1.3845688719148919
2016	1.3745333372658872
2017	1.3616478895519681
2018	1.3569377889551841
2019	1.3111323997486686
2020	1.2792348227741566