Year % of total employment (modeled ILO estimate) 1991 4.1167542157405 1992 4.14403595300199 1993 4.1604070544142 1994 4.2054477599317 1995 4.28887446543296 1996 3.93589958757364 1997 4.33714650828237 1998 4.36498401322892 1999 4.39080306658845 2000 4.42247563833244 2001 4.38400325727756 2002 4.40957859436104 2003 4.34383481156903 2004 4.244816714759 2005 4.38977959216753 2006 4.61272579659504 2007 3.87530400347176 2008 4.63336946085734 2009 4.42814132381733 2010 3.9279233270737 2011 3.47642936250224 2012 3.93219177426453 2013 4.03906080749458 2014 4.028047830113 2015 4.27165717898816 2016 4.24823090190776 2017 4.47140500728559 2018 4.71391587574742 2019 4.61478944801216 2020 4.56668334599115 2021 4.13743464588058 2022 4.32301941812958