Year % of total employment (modeled ILO estimate) 1991 35.4997111496245 1992 38.1611407370694 1993 38.9747778789421 1994 41.9836957187421 1995 47.1888559097369 1996 47.1450374018562 1997 48.2803293094893 1998 48.9999556359089 1999 52.3890515221171 2000 53.070560137802 2001 52.9210840925835 2002 49.0972271157028 2003 43.2397408749235 2004 38.9050989467326 2005 38.4978465423878 2006 36.2690995724709 2007 34.4837322162485 2008 34.0139242043732 2009 34.0640965482424 2010 34.3795811798444 2011 33.3173666909804 2012 32.7041268070733 2013 31.9872110695102 2014 31.3096413692061 2015 30.3650637147372 2016 29.3877912712962 2017 27.8725815656424 2018 27.6917436982953 2019 24.2113434535919 2020 25.1092303379632 2021 25.1675396992165 2022 24.5775358611978