Year % of total labor force 1992 4.5620854204874135 1993 4.6364389866028315 1994 4.703410189467835 1995 6.380171165609329 1996 5.045665138266175 1997 4.989226965478245 1998 5.041312623372122 1999 5.105695460015597 2000 5.132876874830805 2001 3.106071180414419 2002 2.064057646836679 2003 1.6990424351294016 2004 1.6781574923487728 2005 1.776598642678637 2006 0.9200301769898053 2007 1.1774278155547147 2008 1.1962245503226918 2009 1.1712457383971606 2010 1.160425135068134 2011 1.0620672076128979 2012 1.110111801429222 2013 0.6922162320634558 2014 0.6766923279012188 2015 0.6496767285031525 2016 0.6273071989774155 2017 0.6534433925619264 2018 0.6385745879952234 2019 0.5582678066495279 2020 0.5883581571445802