Year % of total employment (modeled ILO estimate) 1991 2.48374162286232 1992 2.55640054280222 1993 2.78174444507911 1994 1.74289630226216 1995 1.66488302469554 1996 1.59747837167192 1997 1.54027161489848 1998 1.48777964567438 1999 1.44005566392903 2000 1.40041369026144 2001 1.35839679454026 2002 1.32396877409406 2003 1.29465356029729 2004 1.26566333355327 2005 1.24625685149405 2006 1.29407215194839 2007 1.3489416949043 2008 1.41352980576021 2009 1.48237750985684 2010 1.55890503703619 2011 1.639936052808 2012 1.74625841925944 2013 1.67650647567041 2014 1.628683423669 2015 1.60071097309335 2016 1.56193190193092 2017 1.52874404979861 2018 1.49997161832321 2019 1.470815698075 2020 1.42905421715831 2021 1.38479755097326 2022 1.34240851189161