Year % of total employment (modeled ILO estimate) 1991 14.0309846925277 1992 13.9922061948244 1993 14.0122802145539 1994 14.0518245573342 1995 14.1281728745106 1996 14.2094388208568 1997 14.3019078939619 1998 14.4262832638691 1999 14.5830679560845 2000 14.8449515998169 2001 15.1058961759954 2002 15.3914706192874 2003 15.735415246283 2004 16.1015400389352 2005 16.4649356561432 2006 16.4486374487514 2007 16.7215050308044 2008 17.0573268379977 2009 17.3680337224168 2010 17.6693959278582 2011 17.9592849613843 2012 18.338816583043 2013 18.70186659705 2014 19.1149031814635 2015 19.4856206832497 2016 19.7534686117176 2017 20.2123989338319 2018 20.620482969446 2019 21.0190683768948 2020 20.7305214708796 2021 20.838520080974 2022 21.1547647196552