Year Percent of total labor force (Units) 1980 3.800 1981 3.900 1982 3.522 1983 4.350 1984 3.875 1985 3.182 1986 2.819 1987 1.737 1988 1.365 1989 1.079 1990 1.332 1991 1.797 1992 1.959 1993 1.971 1994 1.919 1995 3.186 1996 2.765 1997 2.201 1998 4.704 1999 6.251 2000 4.946 2001 5.086 2002 7.320 2003 7.940 2004 6.809 2005 5.591 2006 4.790 2007 4.011 2008 3.519 2009 5.262 2010 4.329 2011 3.421 2012 3.286 2013 3.401 2014 3.296 2015 3.315 2016 3.393 2017 3.124 2018 2.805 2019 2.916 2020 5.808 2021 5.175 2022 4.319 2023 2.900 2024 2.813 2025 2.735 2026 2.658 2027 2.580 2028 2.502 2029 2.424