Year % of total employment (modeled ILO estimate) 1991 3.0569998283114144 1992 3.0941345777450837 1993 3.13128824317766 1994 3.1914386353758015 1995 3.257700992375761 1996 3.2631422441003326 1997 3.3573705805853207 1998 3.396713412403969 1999 3.4394559260872404 2000 3.494052779511963 2001 3.543005266866987 2002 3.6016647884469997 2003 3.63497533871278 2004 3.670268672998175 2005 3.7297310262540515 2006 3.7951108617237703 2007 3.8476213922936027 2008 3.9002745374810384 2009 3.9532607754610063 2010 3.871311556285708 2011 3.7789016097400068 2012 3.7934174471740603 2013 3.8245482138951163 2014 3.760755385375495 2015 3.8061258384210324 2016 3.7662572969015216 2017 3.7505994612893536 2018 3.7353798047433298 2019 3.703698774641051 2020 3.652835507885879 2021 3.5644164219903693 2022 3.5295430178501546