Year % of total employment (modeled ILO estimate) 1991 30.7078915092775 1992 31.2308348734277 1993 34.3320381226525 1994 34.7637125439681 1995 35.6525756695667 1996 37.6984434095025 1997 37.6613641496181 1998 36.4957389862616 1999 38.2596580826839 2000 38.1834151461771 2001 40.491821257649 2002 40.0678904134709 2003 40.6352454194411 2004 43.9439816637627 2005 43.7940707829397 2006 43.7592999448496 2007 40.904778923861 2008 43.309124972604 2009 44.7164570938669 2010 44.5449989879528 2011 42.3268400176897 2012 41.6703526251972 2013 41.8798073398903 2014 47.3578117957886 2015 48.4228050711936 2016 49.0616581229018 2017 48.7683853765662 2018 48.5342455517117 2019 49.716914821577 2020 49.4768793534918 2021 47.3026729931846 2022 47.9630651314409