Year % of total employment (modeled ILO estimate) 1991 5.99480859038162 1992 6.01736222323686 1993 6.03458004308141 1994 6.08546927582398 1995 6.12805472225075 1996 6.17657736205582 1997 6.25613062327101 1998 6.3548849065263 1999 6.43514760144269 2000 6.59341481133285 2001 6.77453938054161 2002 6.94698073905298 2003 7.18104352548578 2004 7.6389908871228 2005 8.09922551899693 2006 8.50870354633269 2007 9.01788616496709 2008 9.60113563417279 2009 9.94366091417851 2010 10.4979847429685 2011 11.0326566637246 2012 11.7582896243501 2013 12.3888122970407 2014 13.0206875001646 2015 13.6509110019206 2016 14.5199995710729 2017 15.5533906549338 2018 16.5546589437593 2019 17.4353235733348 2020 17.3973708103854 2021 17.7449364705967 2022 18.1508592336991