Year Percent of GDP 1981 19.074 1982 17.086 1983 17.636 1984 18.555 1985 17.663 1986 15.096 1987 14.567 1988 14.63 1989 13.991 1990 16.815 1991 15.551 1992 15.28 1993 13.505 1994 13.529 1995 12.548 1996 12.47 1997 14.216 1998 13.185 1999 14.181 2000 13.433 2001 17.745 2002 16.353 2003 17.099 2004 17.573 2005 17.86 2006 18.868 2007 17.782 2008 19.448 2009 15.382 2010 15.644 2011 17.01 2012 17.249 2013 16.864 2014 16.461 2015 14.875 2016 14.338 2017 14.056 2018 14.892 2019 14.903 2020 15 2021 15.018 2022 15.064 2023 15.067 2024 15.034