Year Percent of GDP 1981 39.961 1982 40.324 1983 40.777 1984 41.733 1985 42.471 1986 46.174 1987 46.885 1988 46.493 1989 46.748 1990 45.904 1991 40.872 1992 25.86 1993 31.178 1994 25.709 1995 22.754 1996 24.487 1997 26.379 1998 30.961 1999 28.865 2000 29.541 2001 30.054 2002 30.342 2003 28.811 2004 27.371 2005 25.14 2006 26.193 2007 35.3 2008 37.629 2009 35.454 2010 31.575 2011 37.932 2012 38.907 2013 40.099 2014 39.061 2015 33.613 2016 40.51 2017 30.285 2018 29.375 2019 31.569 2020 29.585 2021 27.529 2022 27.046 2023 26.793 2024 27.081