Year % of total labor force 1992 4.110008487167526 1994 5.690029929557429 1995 7.530317713926504 1996 17.598577228681496 1997 6.364288938717817 1998 6.205255418414601 1999 6.097513419847123 2000 5.315551415020769 2001 1.6596339677284175 2002 1.3491708731724867 2003 1.2703955930787767 2004 1.6226324778003591 2005 0.8138396139144872 2006 0.610172387258787 2007 0.6070220308529064 2008 0.6037594085841171 2009 0.7224938983863597 2010 0.7223498189174109 2011 0.7386056944748793 2012 0.7413819642244368 2013 0.7572599594108662 2014 0.7496358911385897 2015 0.7576779839704203 2016 0.768802717900656 2017 0.8141664970486465 2018 0.7892262350826845 2019 0.8181218451176346 2020 0.8325499794889959