Year % of total employment (modeled ILO estimate) 1991 16.803463955552676 1992 16.783008281358136 1993 16.752429773099195 1994 16.724996774285277 1995 16.76724111123315 1996 16.976662408163335 1997 17.047943145018 1998 17.181140015367838 1999 17.358447197329586 2000 17.47762931501156 2001 17.750663412236158 2002 17.861578951533993 2003 18.072767682282887 2004 18.439089896923 2005 18.785662170794645 2006 19.12993750872702 2007 19.610945522676683 2008 19.780468636780554 2009 20.136849400809428 2010 20.74481857074982 2011 21.337186806063617 2012 21.948702680537444 2013 22.108943883886944 2014 22.3216224435944 2015 22.52291539998317 2016 22.572048411868536 2017 22.661053583956363 2018 22.807779892215855 2019 22.68127239884844 2020 22.01001017381883 2021 22.49762571787295 2022 23.233076536652078