Year % of total employment (modeled ILO estimate) 1991 39.7642435734689 1992 39.2792006118651 1993 38.9165189366667 1994 38.513818950719 1995 38.1025519848771 1996 37.8302716122046 1997 37.7149192218774 1998 37.1061421497076 1999 37.1557490207131 2000 37.6166491851236 2001 37.2361794152852 2002 37.2361952233607 2003 37.3383230488883 2004 37.2958732385774 2005 37.1947791481175 2006 37.2704816857821 2007 37.5289239738553 2008 36.1506932360603 2009 34.9600296594572 2010 33.9627238003294 2011 33.004936099442 2012 32.220989550042 2013 31.5298726499835 2014 31.2264398530324 2015 31.0115278138142 2016 30.7845732370933 2017 30.3904991844738 2018 30.0525846029134 2019 29.3242451580832 2020 30.2447034925561 2021 30.0399249483256 2022 29.8085456368104