Year % of total employment (modeled ILO estimate) 1991 2.45480192475131 1992 2.43705816937992 1993 2.38391730726456 1994 2.34684848935211 1995 2.29396202668229 1996 2.21441702709971 1997 2.18123414354694 1998 2.19556032453876 1999 2.21794621998756 2000 2.24380075450437 2001 2.28451636246983 2002 2.33939845386753 2003 2.37626055685566 2004 2.42037025240539 2005 2.50135574170143 2006 2.57606787921792 2007 2.66938264095415 2008 2.76291531717949 2009 2.87714542466893 2010 2.98893501411112 2011 3.10202922592375 2012 3.23118134861127 2013 3.37115045583515 2014 3.49668012624016 2015 3.46507387788864 2016 3.47594666372175 2017 3.47201704926411 2018 3.27820942648916 2019 3.13363697232709 2020 3.08326522245943 2021 3.1218109154076 2022 3.11915682270691