Year % of total employment (modeled ILO estimate) 1991 12.5331727564515 1992 11.8003161983294 1993 11.0928489798035 1994 10.4735421400612 1995 9.9836667920685 1996 9.53049493506682 1997 9.57900377351475 1998 9.6648022637749 1999 9.84041694550364 2000 10.0448840008836 2001 11.0677936049598 2002 12.2801808800688 2003 13.6810778484316 2004 14.0696825183611 2005 14.5176948886374 2006 14.5196419929079 2007 15.2549177397509 2008 16.0183023424594 2009 16.7777197054001 2010 17.6272294077902 2011 18.5563197157415 2012 19.6245008575996 2013 20.7888891098129 2014 20.558706252946 2015 20.4735493159518 2016 20.4595231176439 2017 20.4193210617192 2018 20.7665812180573 2019 21.2516150881744 2020 21.4174538960672 2021 21.7948920992104 2022 21.8789546966471