Year % of total employment (modeled ILO estimate) 1991 25.7350097722593 1992 25.9936568605526 1993 26.1731935358604 1994 26.1162455155202 1995 26.3361587049796 1996 26.4300282544019 1997 26.7755481267592 1998 27.0249339042346 1999 27.3458632183306 2000 27.9423133084812 2001 28.4229694249174 2002 28.9461373964181 2003 29.4598681723293 2004 30.02505022049 2005 31.1935220677658 2006 32.3828498211363 2007 33.8220395816389 2008 35.2242046180587 2009 36.4144823934339 2010 37.7022952825919 2011 39.0350634584063 2012 40.3821867533099 2013 41.6410191869844 2014 42.9614521495926 2015 43.8706477852827 2016 44.9103275724318 2017 46.1465852019432 2018 47.2861681145455 2019 48.3918927567482 2020 48.9550702257519 2021 50.0923147383939 2022 50.3983786591474