Year % of total labor force (modeled ILO estimate) 1991 2.18 1992 3.09 1993 3.07 1994 3.03 1995 3.3 1996 3.57 1997 2.5 1998 3.41 1999 4.85 2000 3.7 2001 3.76 2002 5.65 2003 5.93 2004 5.84 2005 5.59 2006 4.48 2007 3.9 2008 3.96 2009 5.86 2010 4.12 2011 3.89 2012 3.72 2013 3.86 2014 3.74 2015 3.79 2016 4.08 2017 4.2 2018 3.613 2019 3.1 2020 4.1 2021 4.64 2022 3.591 2023 3.472