Year % of total employment (modeled ILO estimate) 1991 2.60216702942606 1992 2.60176010878942 1993 2.60241771955426 1994 2.60410390114396 1995 2.6156219879174 1996 2.63268223980069 1997 2.64818471517951 1998 2.69000997835862 1999 2.74510211569904 2000 2.82963445821091 2001 2.95636504461498 2002 3.31453580217567 2003 3.73706281370406 2004 4.22800279557889 2005 4.78894793468601 2006 5.4245578121165 2007 5.49097921555182 2008 5.57414166580352 2009 5.64495330049902 2010 5.74843699715423 2011 5.89846884987988 2012 5.99299069305021 2013 6.12089132076933 2014 6.25401832903487 2015 6.46514816747368 2016 6.71939639000526 2017 6.98472768341229 2018 7.25096468497255 2019 7.53072647438921 2020 7.98207741023233 2021 8.3480557176918 2022 8.47208178281404