Year % of total labor force (modeled ILO estimate) 1991 3.168 1992 3.141 1993 3.112 1994 3.133 1995 3.088 1996 3.095 1997 3.147 1998 3.191 1999 3.146 2000 3.145 2001 3.164 2002 3.18 2003 3.137 2004 3.179 2005 3.15 2006 3.185 2007 2.4 2008 1.634 2009 1.618 2010 1.612 2011 1.599 2012 1.591 2013 1.584 2014 1.572 2015 1.444 2016 1.356 2017 1.258 2018 1.157 2019 1.053 2020 1.03 2021 1.11 2022 0.919 2023 0.93