Year Percent of GDP 1980 28.648 1981 23.749 1982 27.021 1983 26.466 1984 26.25 1985 27.552 1986 27.05 1987 21.664 1988 23.603 1989 24.009 1990 24.54 1991 25.006 1992 22.581 1993 21.437 1994 20.099 1995 22.472 1996 23.354 1997 22.441 1998 25.176 1999 24.149 2000 25.826 2001 25.692 2002 24.75 2003 27.375 2004 25.307 2005 22.099 2006 26.152 2007 27.131 2008 24.511 2009 18.338 2010 17.048 2011 15.105 2012 12.803 2013 11.601 2014 11.911 2015 10.217 2016 11.474 2017 12.509 2018 13.323 2019 14.458 2020 15.674 2021 16.691 2022 17.057 2023 17.289 2024 17.347