Year Percent of GDP 1980 37.171 1981 46.031 1982 39.44 1983 33.012 1984 29.91 1985 21.055 1986 19.835 1987 22.552 1988 22.663 1989 23.236 1990 30.796 1991 24.966 1992 33.121 1993 36.632 1994 33.297 1995 32.965 1996 30.523 1997 25.728 1998 21.819 1999 21.57 2000 22.362 2001 21.057 2002 20.096 2003 20.841 2004 27.376 2005 34.149 2006 28.776 2007 30.739 2008 30.518 2009 28.467 2010 29.626 2011 26.828 2012 24.537 2013 21.714 2014 21.351 2015 20.796 2016 19.377 2017 19.303 2018 18.404 2019 18.755 2020 18.382 2021 18.035 2022 17.744 2023 17.5 2024 17.262