Year % of total employment (modeled ILO estimate) 1991 4.87446685518771 1992 4.82264847035283 1993 4.75837135504649 1994 4.68230061978583 1995 4.60146622991733 1996 4.51215758694983 1997 4.40172366704094 1998 4.28737655518095 1999 4.16990454965324 2000 4.03810792418956 2001 3.90615019942373 2002 3.78438275847559 2003 3.66220735785953 2004 3.55091311181273 2005 3.44589079943007 2006 3.35011139532965 2007 3.25433707191431 2008 3.18165992661828 2009 3.1299196840729 2010 3.05231978960511 2011 2.97951831342985 2012 2.90342011913527 2013 2.8251841929002 2014 2.74090903051802 2015 2.66259389871393 2016 2.59139048013138 2017 2.52165053489557 2018 2.46181243572701 2019 2.39985117202034 2020 2.37520179203844 2021 2.37201174852214 2022 2.31966952653321