Year	% of total labor force
1992	2.188752430427178
1993	2.4594411422585667
1994	1.3838555578406913
1995	2.254473243597953
1996	1.9825278863220628
1997	1.9094536240919464
1998	1.9319162974972766
1999	2.1940915795664395
2000	1.8979866549245672
2001	3.9739249544152284
2002	3.877968622779694
2003	3.715307126300332
2004	3.680145232280859
2005	3.6852097830841215
2006	3.6696791457147375
2007	3.649896356904816
2008	3.6289535763634952
2009	3.6086819039811293
2010	3.5953471561794514
2011	3.09733290232051
2012	3.0929401097171563
2013	3.0906199098908247
2014	3.088065370044046
2015	3.0838884007149936
2016	3.030298892609601
2017	3.0275223265122277
2018	3.0460909741000894
2019	3.0513024336794494
2020	3.1320669738999705