Year % of total employment (modeled ILO estimate) 1991 27.3355958093873 1992 27.2817072871815 1993 27.1473868340189 1994 27.8372727040308 1995 27.7832721316516 1996 27.3279926789423 1997 28.5496356343897 1998 28.6749801793281 1999 28.3048554338352 2000 28.4625582857888 2001 28.9306720716641 2002 27.6242023175204 2003 27.7419076516012 2004 27.5964086363596 2005 27.6018951859549 2006 27.7727693639566 2007 25.7689798979557 2008 23.2869037543345 2009 19.8522067103301 2010 18.083617016598 2011 17.4520131273513 2012 16.9822356845006 2013 17.2300485095876 2014 17.3014794693632 2015 18.1148593925484 2016 18.5472352581106 2017 18.8407472444398 2018 18.8158138556986 2019 18.7693275737741 2020 18.8229100438031 2021 18.7709998987957 2022 19.2499124626067