Year Percent of GDP 1980 12.012 1981 14.688 1982 14.944 1983 15.923 1984 16.807 1985 16.327 1986 16.463 1987 17.879 1988 20.692 1989 19.785 1990 17.588 1991 16.143 1992 28.237 1993 27.938 1994 23.897 1995 25.283 1996 25.554 1997 25.695 1998 22.6 1999 21.263 2000 23.463 2001 25.88 2002 27.338 2003 26.247 2004 26.467 2005 26.942 2006 28.423 2007 26.571 2008 24.351 2009 21.056 2010 20.207 2011 21.47 2012 19.933 2013 21.262 2014 22.476 2015 21.257 2016 21.289 2017 20.833 2018 19.956 2019 19.289 2020 19.042 2021 19.123 2022 19.241 2023 19.335 2024 18.31