Year % of total employment (modeled ILO estimate) 1991 1.65894574125745 1992 1.65850775535636 1993 1.65171660390202 1994 1.64459128425912 1995 1.64459859359362 1996 1.64689347191327 1997 1.68364672232887 1998 1.73328346799001 1999 1.7913371134046 2000 1.8598237095678 2001 1.9262291614265 2002 1.98948444332962 2003 2.00803303067198 2004 2.01893745832817 2005 2.02766143001021 2006 2.03604510076648 2007 2.04526553441916 2008 2.04780238771651 2009 2.0375689657335 2010 2.01789294434416 2011 1.908631839472 2012 1.80229298522013 2013 1.70104131115237 2014 1.59957748554771 2015 1.5545505223884 2016 1.50770771851829 2017 1.4877898376167 2018 1.47307520294131 2019 1.45813658312469 2020 1.44276911312799 2021 1.43218392237935 2022 1.41966357308585