Year % of total employment (modeled ILO estimate) 1991 15.3957725895221 1992 15.4905077281803 1993 15.5286665773347 1994 15.6992340138585 1995 15.860919841 1996 16.06875313352 1997 16.3266160616917 1998 16.5453160890875 1999 16.8260651407 2000 17.0360741648031 2001 17.2186292375736 2002 17.4474032543799 2003 17.7757448192804 2004 18.066170865866 2005 18.4165973916286 2006 18.7978824344814 2007 19.2535021217442 2008 19.7797629781526 2009 20.0973644315508 2010 20.2408172606909 2011 20.5182566624601 2012 20.419414287217 2013 20.9270465628567 2014 20.010086526187 2015 20.1014044831432 2016 19.9764936885291 2017 19.7559472293095 2018 19.559418719696 2019 19.3710455146693 2020 18.9056610271889 2021 18.6810033134288 2022 18.8364564487094