Year % of total employment (modeled ILO estimate) 1991 4.35780420821269 1992 4.37306131289942 1993 4.39483719327719 1994 4.45005608108792 1995 4.46787869496939 1996 4.54913567759034 1997 4.63416137500147 1998 4.75926775800215 1999 4.82156276081277 2000 4.90248759100606 2001 5.05899500799741 2002 5.19504756693589 2003 5.41591765636636 2004 5.61160157326118 2005 5.9039407751779 2006 6.18853225622605 2007 6.73249596052385 2008 7.40482211155799 2009 7.98459391276339 2010 8.74504371726253 2011 9.54891452864513 2012 10.3744659845436 2013 11.2142349973651 2014 12.1320583519496 2015 12.5273106280269 2016 12.8624679388557 2017 13.1978334648637 2018 13.4932779155898 2019 13.7351185420072 2020 13.8016378104601 2021 14.0607911665466 2022 14.3822784028787