Year % of total labor force (modeled ILO estimate) 1991 1.8 1992 1.96 1993 1.96 1994 1.9 1995 3.22 1996 2.83 1997 2.22 1998 4.58 1999 6.25 2000 4.92 2001 5.09 2002 7.28 2003 7.86 2004 6.74 2005 5.58 2006 4.77 2007 4.01 2008 3.56 2009 5.26 2010 4.329 2011 3.422 2012 3.285 2013 3.4 2014 3.296 2015 3.314 2016 3.392 2017 3.124 2018 2.805 2019 2.917 2020 5.808 2021 5.174 2022 4.318 2023 3.931