Year % of total employment (modeled ILO estimate) 1991 3.50606960604576 1992 3.55190711673102 1993 3.7938978609515 1994 3.85658603974196 1995 3.91481168999643 1996 4.02677453907694 1997 3.86037314074456 1998 3.72661469860397 1999 4.11800300009835 2000 3.01636871604134 2001 3.43844791143143 2002 3.6357722314194 2003 3.79792978630791 2004 3.0904237417456 2005 2.95976312442223 2006 2.776763590515 2007 1.93756490911178 2008 1.4561117395588 2009 1.62688551339462 2010 1.61157225377409 2011 1.39766745439314 2012 1.31183695488918 2013 1.16597871776423 2014 1.26019874768866 2015 1.14947519638738 2016 0.92238764740074 2017 0.830573599204852 2018 0.742556917688266 2019 0.590438720372235 2020 0.531398348095212 2021 0.601870619191167 2022 0.541940074895354