Year % of total employment (modeled ILO estimate) 1991 3.20115233873947 1992 3.27795461521974 1993 3.37236560902718 1994 3.42158103620658 1995 3.40905414486186 1996 3.51728863696423 1997 3.51097107992056 1998 3.50595628927868 1999 3.56914792555998 2000 3.64045249041019 2001 3.86442069468476 2002 4.10683117780088 2003 4.39380507148402 2004 4.71780440722476 2005 5.08640861453249 2006 5.50401889399901 2007 5.98512444592318 2008 6.47233152222778 2009 7.02045238824081 2010 7.53574046428104 2011 7.86381932654987 2012 8.14350356347297 2013 8.65618771702727 2014 9.10554421707275 2015 9.41396601290437 2016 9.67347938312898 2017 10.043877152857 2018 10.4410926745793 2019 10.7567589176194 2020 11.0024320444432 2021 11.3628536201808 2022 11.5071523513016