Year % of total employment (modeled ILO estimate) 1991 25.2497378442519 1992 25.3981989777982 1993 25.5365091140314 1994 25.6549267392124 1995 25.8167026820897 1996 25.8819589163441 1997 25.3178236215501 1998 24.7408726625111 1999 24.0924858173718 2000 23.3959657050955 2001 22.8120532399455 2002 22.2246328075847 2003 21.1499235084141 2004 20.2088381816102 2005 19.4400799885731 2006 18.7951347388086 2007 18.1416588077629 2008 18.1014220237396 2009 18.1297691467035 2010 18.2698942042318 2011 18.4466019417476 2012 18.6331435443561 2013 18.7794561933535 2014 18.9083266025406 2015 19.0124328778535 2016 19.0974147955989 2017 19.1316566217148 2018 19.1420986446835 2019 19.0782144615145 2020 19.2340671263081 2021 19.2067629205391 2022 19.1737288135593