Year % of GDP 1973 6.82639714625446 1974 8.39609756097561 1975 7.62567811934901 1976 9.0101246105919 1977 8.11421772754313 1978 7.95427092320966 1979 9.76381498158002 1980 7.05772091639393 1981 10.9018372703412 1982 13.5881097305749 1983 11.7990806869756 1984 14.4693267891291 1985 15.3598998344382 1986 12.9763628056317 1987 14.7270360231869 1988 14.9421682470416 1989 14.8495526508768 1990 15.5959595226455 1991 16.1635964094563 1992 15.5944739752032 1993 17.9790516390129 1994 22.0208378300317 1995 18.2510530469739 1996 16.3440092133384 1997 21.3702776812483 1998 16.2417731234373 1999 14.7490497843462 2000 13.7714836972673 2001 12.471608660492 2002 12.4969555860172 2003 5.34978026544429 2004 5.25596010229191 2005 7.23312264139718 2006 7.36080443565175 2007 9.9923700762125 2008 10.0237879220093 2009 12.6072342040108 2010 13.4113788716402 2011 14.3488582863768 2012 18.5687326980566 2013 19.9473003777666 2014 19.3315018437025 2015 18.2736366996778 2016 18.2128934483507 2017 20.0038403024645 2018 20.1314045454092 2019 21.3224677858948 2020 21.9379742217932 2021 22.378409503797 2022 22.3151714920766 2023 25.740859499208