Year % of total employment (modeled ILO estimate) 1991 37.542015099003 1992 37.4599054268651 1993 37.5723405801893 1994 37.5888743507076 1995 37.5390847641749 1996 37.5568867660865 1997 37.5837377831312 1998 37.602136859915 1999 37.3248543365027 2000 36.9256584398385 2001 37.328966643873 2002 37.8268509749986 2003 37.5769574844893 2004 37.3986221095937 2005 37.1169029413371 2006 36.7987369153656 2007 36.3826103265175 2008 36.1629490908008 2009 35.8188919917251 2010 36.1149785092107 2011 36.8999108204086 2012 36.3279962555253 2013 35.5427251570847 2014 35.4392479802178 2015 34.2761660839176 2016 33.4011453367289 2017 32.7174132932453 2018 32.0055604812061 2019 31.5848088372928 2020 31.3041100660007 2021 30.748203149195 2022 30.2042540121324