Year % of total employment (modeled ILO estimate) 1991 5.22751534560982 1992 5.34141539736815 1993 5.49280830733107 1994 5.71362550091518 1995 5.96877167816957 1996 6.50080940615149 1997 7.42032227467364 1998 8.36524627623561 1999 9.47399515146576 2000 10.6165618755179 2001 12.1678899551074 2002 13.4674062577163 2003 14.5676495408705 2004 15.9739249572589 2005 17.0653663344895 2006 17.7973082375567 2007 18.3143893023521 2008 18.9088405713958 2009 18.8053339495063 2010 18.5451364570286 2011 18.3163863142871 2012 18.0735410183706 2013 17.4380816198567 2014 16.9399322206676 2015 16.0038295156372 2016 15.1448408713276 2017 14.6105459380425 2018 13.9999444870281 2019 13.3234080828758 2020 13.0631320870365 2021 13.2006396921584 2022 13.4143191432775