Year % of total employment (modeled ILO estimate) 1991 40.0718566747821 1992 39.9382622594256 1993 40.1263803076634 1994 39.891772320315 1995 39.3849532691177 1996 38.8025436477442 1997 38.4197642709686 1998 38.1697504172627 1999 37.572139586702 2000 37.1460067373979 2001 36.9251441306716 2002 36.4258485038886 2003 36.1555716487064 2004 36.1663353037515 2005 38.1609804036611 2006 40.5238640648733 2007 42.6903205223285 2008 44.9381526016078 2009 47.2185489495172 2010 48.6825181321233 2011 51.1022140863603 2012 53.2924848831765 2013 55.4400666745874 2014 57.5996382189249 2015 56.8499019175073 2016 56.2217533928862 2017 55.3202787713785 2018 54.4014880039501 2019 53.4233279860809 2020 55.1641528611982 2021 56.7075062685015 2022 56.3182611295094