Year % of total employment (modeled ILO estimate) 1991 14.930352889110452 1992 14.903687362252677 1993 14.90419969278921 1994 14.923973162048886 1995 15.008610669703094 1996 15.146920386024238 1997 15.351100375891484 1998 15.519193972574763 1999 15.72413918643532 2000 15.890736238677162 2001 16.082172994874394 2002 15.77609222206143 2003 15.603133825797922 2004 15.730551379896086 2005 15.806022806966565 2006 16.088161157404002 2007 16.47987696198762 2008 16.926776044940528 2009 17.387578321910016 2010 17.63768837371764 2011 18.036614265743 2012 18.475060922036636 2013 18.721055325942594 2014 18.88702478039576 2015 19.07457884219004 2016 19.11238064000246 2017 19.28596214362979 2018 19.481876778942333 2019 19.59777658698871 2020 19.36611951099647 2021 19.610209092197287 2022 19.91464668186382