Year % of total employment (modeled ILO estimate) 1991 31.6194838163204 1992 31.7145667527901 1993 31.8405559947848 1994 32.0130017088073 1995 32.1606811362045 1996 32.3629057968643 1997 32.5619735082558 1998 32.8539655897968 1999 33.2323796019233 2000 33.6135526512066 2001 34.1241984064333 2002 34.5668393203997 2003 35.0514239574121 2004 35.5221788036194 2005 36.0346656978675 2006 36.4642701317756 2007 36.872768252974 2008 37.3452137996773 2009 37.7860805216729 2010 38.1865232665076 2011 38.6179935984063 2012 39.0924455912428 2013 39.5604177760821 2014 40.0406301497899 2015 40.448538484577 2016 40.9572529489702 2017 41.2787777748361 2018 41.5883376994507 2019 42.0113065531391 2020 41.7221854860399 2021 41.8486820868954 2022 42.374525759439