Year % of total employment (modeled ILO estimate) 1991 2.56926207783187 1992 2.62134770121763 1993 2.65577102711521 1994 2.7118737585522 1995 2.81601861158481 1996 2.91941967151591 1997 3.21032435425059 1998 3.52274411023855 1999 3.92528361747066 2000 4.30576242949618 2001 6.37496090632386 2002 6.83517012968782 2003 7.60091706290088 2004 5.88869967397891 2005 5.73606314216732 2006 5.64749598013023 2007 5.55934556103837 2008 4.96146309601568 2009 5.19116531850354 2010 5.58341746181652 2011 5.65683237698675 2012 4.8138747366874 2013 4.69077571967996 2014 3.93151964177026 2015 4.32575444630849 2016 4.43597588053404 2017 4.37625030007202 2018 4.30915835419643 2019 3.92268861433695 2020 3.83133048223782 2021 4.23985892405984 2022 4.08415593274748