Year % of total employment (modeled ILO estimate) 1991 2.48714305473475 1992 2.49207289767818 1993 2.50507539374549 1994 2.51245202646881 1995 2.51435139774859 1996 2.51296201611642 1997 2.51341816815677 1998 2.54640257606364 1999 2.56440323643701 2000 2.55681818181818 2001 2.61036767151483 2002 2.68551658994304 2003 2.75406085441554 2004 2.81318163604387 2005 2.85285285285285 2006 3.09908033432709 2007 3.4418810059382 2008 3.82232890339127 2009 3.79620276729814 2010 3.68950225635393 2011 3.51634390514822 2012 3.3534800035988 2013 3.17819476718446 2014 2.52837467176575 2015 2.55535550503292 2016 2.60617631744082 2017 2.81676154151336 2018 3.02085130033155 2019 3.53708642527773 2020 3.45151543391245 2021 3.308174511516 2022 3.30945087019395