Year % of total employment (modeled ILO estimate) 1991 32.5916395649067 1992 32.917009920661 1993 33.2748452873327 1994 33.5751769183384 1995 33.874136166117 1996 34.012948259629 1997 34.3133741591421 1998 34.50771410427 1999 34.777680161667 2000 35.1170084387213 2001 35.3687164632545 2002 35.5048702257521 2003 35.9235791769165 2004 34.6961826138494 2005 35.0146805699522 2006 36.2917582533161 2007 36.5193460819038 2008 36.8969291520101 2009 37.4025687754086 2010 37.7899979577862 2011 38.3637105368259 2012 39.3974122907482 2013 40.0272089820691 2014 40.7069604731233 2015 41.4156574029371 2016 42.2036571719969 2017 42.8681170195425 2018 43.5568891419421 2019 44.2395957643002 2020 44.4194151854555 2021 44.7843953687641 2022 45.29371815121