Year % of total employment (modeled ILO estimate) 1991 20.483205266559594 1992 20.601906815339483 1993 20.792437977883026 1994 21.02403294986405 1995 21.400618960779685 1996 21.866923215250992 1997 22.179878594725867 1998 22.428156450437623 1999 22.748344323483753 2000 23.053642641042025 2001 23.60259471872365 2002 24.249764947072844 2003 24.883720713212675 2004 25.438267058290975 2005 25.94128922943961 2006 26.36548080030029 2007 26.623110646486737 2008 26.814437523538935 2009 26.95956844718954 2010 27.42986052872254 2011 27.80358688606623 2012 28.287978787837808 2013 28.325309242216317 2014 28.982867488851635 2015 29.658551259303923 2016 30.362804023753586 2017 31.33256110333487 2018 32.05659588838841 2019 32.57835716773582 2020 32.49351765501604 2021 32.62539993624054 2022 33.01736119870375