Year % of total employment (modeled ILO estimate) 1991 2.33599763479231 1992 2.32593298839461 1993 2.35906617526638 1994 2.4060086677345 1995 2.43888579656969 1996 2.51734194512964 1997 2.6046031320525 1998 2.69843871150785 1999 2.81303565394058 2000 2.88020380936196 2001 3.05713417615148 2002 3.20844252255374 2003 3.38415124987295 2004 3.60565371971226 2005 3.8164467199002 2006 4.09366725623662 2007 4.35813609305271 2008 4.6463765820009 2009 4.95795397191483 2010 5.30762302534727 2011 5.70897517986131 2012 6.13562235916559 2013 6.60858414536167 2014 7.14858573903153 2015 7.74583082616296 2016 8.05640305270281 2017 8.32106011465013 2018 8.52305503134033 2019 8.64956027707526 2020 8.8233301544917 2021 9.007285420888 2022 9.08160989329672