Year	Percent of total labor force
1999	4.345
2000	4.571
2001	4.617
2002	5.265
2003	5.562
2004	5.822
2005	6.051
2006	6.254
2007	5.645
2008	5.176
2009	5.377
2010	5.548
2011	5.772
2012	5.524
2013	5.568
2014	5.721
2015	5.591
2016	5.6
2017	6