Year % of total employment (modeled ILO estimate) 1991 25.3711682180013 1992 25.4098731269725 1993 25.4867985626837 1994 25.544632992436 1995 25.6964734344468 1996 25.7972698755692 1997 25.9186421459197 1998 26.0584382003103 1999 26.3408785288742 2000 26.6169673236182 2001 26.9905074054606 2002 27.3796057633467 2003 27.7972202068485 2004 28.1229815713167 2005 28.557 2006 29.0274474638387 2007 29.6947069973501 2008 29.9664544096321 2009 30.3173745031424 2010 30.7981117307504 2011 28.8846895791504 2012 29.1081991809428 2013 29.0104850657683 2014 28.8743696962243 2015 27.0335880650269 2016 27.247631149459 2017 27.5925904228521 2018 27.8313835500242 2019 27.9422548243193 2020 28.0943133952244 2021 28.4241830115028 2022 28.8137412775094