Year % of total employment (modeled ILO estimate) 1991 22.3718445475204 1992 22.6848271803862 1993 23.1301862303306 1994 23.2902482367968 1995 23.111998597391 1996 22.1870683757374 1997 21.4630238101468 1998 20.8002448994292 1999 19.9526360616839 2000 19.3689032092221 2001 18.7379047437264 2002 18.3063075149867 2003 17.8442139990702 2004 19.9990109938299 2005 22.4583933443506 2006 23.374809590315 2007 24.2258591982676 2008 25.1418291796542 2009 24.4907483398201 2010 24.1670003899982 2011 24.3543581467098 2012 24.7010088972446 2013 24.7956479031951 2014 24.8429258360305 2015 24.916374152044 2016 25.1005434137358 2017 25.2343579164562 2018 25.1119589674328 2019 24.9222158903787 2020 24.9395010343755 2021 25.2533208928593 2022 25.1586587791191