Year	% of total labor force
1993	6.231179007044632
1994	6.0129858629236015
1995	5.579779690007731
1996	5.266978344100314
1997	4.4167618030757945
1998	4.517742931794551
1999	19.103127277450955
2000	18.946498876472617
2001	15.874657619004523
2002	15.360530928455784
2003	17.222284271706258
2004	16.401268038334905
2005	16.1905158843388
2007	15.758916660295489
2008	15.246801945552313
2009	14.752573565435616
2010	14.394253428757542
2011	14.02051338359638
2012	13.743197372750254
2013	13.484962011508506
2014	13.371030692728745
2015	13.290864054388784
2016	13.212829706763593
2017	13.076329513146243
2018	12.807604701771671
2019	12.542618513774217
2020	12.364760432766616