Year % of total employment (modeled ILO estimate) 1991 14.222057400295041 1992 14.1398104905134 1993 14.169066653424869 1994 14.247544217631347 1995 14.335492100144236 1996 14.563997519875754 1997 14.733994671031157 1998 14.81962195174144 1999 15.094385961539615 2000 15.210561569701364 2001 15.530758672581548 2002 15.767156646663166 2003 16.237317172852222 2004 16.601390020723553 2005 16.998961750950723 2006 17.43724178907178 2007 17.950887302049047 2008 18.325588644302105 2009 18.931126435603282 2010 19.553198065338595 2011 20.074013356995163 2012 20.790259158436502 2013 20.98368758582581 2014 21.189607753409476 2015 21.467747543677625 2016 21.707467745044124 2017 21.927581112497798 2018 22.15366661927196 2019 22.28443877091607 2020 21.71975840302829 2021 22.372835759707346 2022 23.055805634057744