Year % of total employment (modeled ILO estimate) 1991 25.0677339550744 1992 24.9965212601526 1993 24.8676976827827 1994 24.7713167168705 1995 24.7597831563804 1996 24.7243013144282 1997 24.7153304336594 1998 24.7802972120285 1999 24.708934666785 2000 24.812042428412 2001 25.0099828287825 2002 24.8049870015375 2003 24.6808392715104 2004 26.7845387565126 2005 27.5619058818265 2006 28.1266309072635 2007 28.7639260934518 2008 29.27809383825 2009 29.823937544417 2010 30.3792304249688 2011 30.8573750874896 2012 30.4900656376624 2013 30.1393749026262 2014 30.9635657239994 2015 31.23106185391 2016 31.3736566360602 2017 30.9825162927618 2018 30.8475065775392 2019 30.8420762766156 2020 30.8431399752349 2021 30.94291440086 2022 30.850998486007