Year % of total employment (modeled ILO estimate) 1991 31.9487116230334 1992 33.5518895950591 1993 35.7916016710296 1994 35.2603122369879 1995 35.4261489367127 1996 35.2749499793922 1997 36.1243566505816 1998 36.5470499417334 1999 38.0607291424344 2000 40.1252369874209 2001 39.7468111869038 2002 42.126983054629 2003 42.979148608136 2004 45.9630052585664 2005 47.95437038499 2006 49.1713413179657 2007 49.7746677397475 2008 49.521401108733 2009 51.7499957276623 2010 50.0731377051125 2011 49.3801756407595 2012 50.4165844532814 2013 50.6863499467419 2014 51.0597225719195 2015 52.370082099378 2016 53.7240738881426 2017 54.0794237911775 2018 54.9047922049389 2019 56.5720907890104 2020 56.2050967404516 2021 55.3100878233325 2022 55.6092047193729