Year % of total employment (modeled ILO estimate) 1991 18.3708023704261 1992 18.1968812897717 1993 17.9795083191445 1994 17.7877866167525 1995 17.558076199031 1996 17.3278071964523 1997 17.0408897552444 1998 16.7353587865085 1999 16.392684501684 2000 15.876724330453 2001 15.3392055560261 2002 14.7236701416734 2003 14.1796932787613 2004 13.7239993917518 2005 12.4717129266152 2006 11.3006317629371 2007 10.2357205028324 2008 9.2244382003174 2009 8.28302885888271 2010 7.41871538113419 2011 6.61749792569374 2012 5.88992120288626 2013 5.22579316499434 2014 4.63359090858842 2015 4.46123907734935 2016 4.273369496657 2017 4.07631418296731 2018 3.91855744089292 2019 3.76808597576885 2020 3.77282643331617 2021 3.64345042436155 2022 3.52372648684748