Year % of total employment (modeled ILO estimate) 1991 2.266548238056857 1992 2.395253317830794 1993 2.5179723191740693 1994 2.5738746879675714 1995 2.6737221549171735 1996 2.768944524366895 1997 2.7262346925261483 1998 2.7894978482949706 1999 2.8270518143134002 2000 3.008029205593532 2001 3.050160943173905 2002 2.94027840394646 2003 2.9688070482194484 2004 3.1910304392856603 2005 3.1739793285595175 2006 3.0711791717056536 2007 3.0847983410292557 2008 2.9900850144847424 2009 2.9877732479527714 2010 2.9196310001163233 2011 2.8702754447387804 2012 2.753084170476669 2013 2.7258170462316764 2014 2.7755483932475165 2015 2.592578346439452 2016 2.6476901192469398 2017 2.6058673749751122 2018 2.5760731642706425 2019 2.5233560079061528 2020 2.2869514764755405 2021 2.4858957143037124 2022 2.453178650753797