Year Percent of total labor force (Units) 1993 12.700 1994 14.600 1995 13.700 1996 12.600 1997 11.882 1998 12.725 1999 16.492 2000 18.900 2001 19.458 2002 18.825 2003 17.700 2004 18.358 2005 16.358 2006 13.442 2007 11.217 2008 9.592 2009 12.100 2010 14.433 2011 13.617 2012 13.908 2013 14.175 2014 13.108 2015 11.475 2016 9.658 2017 8.058 2018 6.508 2019 5.717 2020 6.633 2021 6.808 2022 6.175 2023 5.842 2024 5.900 2025 5.900 2026 5.900 2027 5.900 2028 5.900 2029 5.900