Year % of total employment (modeled ILO estimate) 1991 35.75298877793681 1992 36.216161268308106 1993 36.898807450287514 1994 37.534303361860836 1995 38.20296354897378 1996 38.91430439449965 1997 39.66164541170304 1998 39.93794053103546 1999 40.350435887597015 2000 40.8934985093838 2001 41.888227669722944 2002 42.402473963389134 2003 43.0013362633449 2004 44.105157928608406 2005 45.041940899529095 2006 45.923222721402354 2007 46.68494641848552 2008 47.59160927998902 2009 48.35085587478594 2010 49.20239596814264 2011 50.11464358750185 2012 50.94032601015655 2013 51.628379991930636 2014 52.33573135136862 2015 53.1819691790409 2016 53.74489617207789 2017 54.15833878444754 2018 54.72977318025425 2019 55.260057089872866 2020 54.999491902231796 2021 55.29886379250867 2022 55.59816997150208