Year % of total employment (modeled ILO estimate) 1991 17.2036711135193 1992 17.6337021523248 1993 17.5229856224749 1994 16.7454551064513 1995 16.8993088695849 1996 17.5939346293513 1997 17.6124956900797 1998 17.869190789295 1999 17.8358946091126 2000 17.9876630566825 2001 20.0652439829278 2002 21.2672425427373 2003 22.1762339412334 2004 23.6608417979522 2005 24.7179673099957 2006 25.9171778388555 2007 27.1526582912799 2008 28.4051207457219 2009 26.3379438182805 2010 29.2410572574306 2011 26.9805283666439 2012 29.052711766875 2013 31.1946509309651 2014 30.2358593191394 2015 32.6101848624275 2016 36.6963209880965 2017 36.3027292565799 2018 36.0239496134939 2019 35.6587560331313 2020 37.9549582579505 2021 36.4540258902029 2022 36.7916733108157