Year % of total employment (modeled ILO estimate) 1991 3.86272362175977 1992 3.86943979486449 1993 3.87796681003709 1994 3.87273593898951 1995 3.86612905902069 1996 3.85460775123638 1997 3.82787959148238 1998 3.7963801599607 1999 3.75999284094977 2000 3.70289949479596 2001 3.64788299980463 2002 3.61314604476107 2003 3.53443339753266 2004 3.59202442425841 2005 3.57992330469395 2006 3.4311416729465 2007 4.799459215863 2008 6.6224450110194 2009 8.99264172453104 2010 4.10910486346744 2011 3.70363042833119 2012 3.33507640462495 2013 3.00698439173245 2014 2.69911175530531 2015 2.42573627053281 2016 2.15942700352778 2017 1.90755429897816 2018 1.67690208120096 2019 1.46501810415311 2020 1.46476546748609 2021 1.40723494567455 2022 1.35121640203105