Year % of GDP 1960 11.72691872277 1961 11.2657887764801 1962 12.8968408879999 1963 12.4644192015205 1964 12.0726213105184 1965 11.6477483653885 1966 10.0575032538616 1967 8.83133411105468 1968 10.066712557292 1969 10.7299084794344 1970 10.4724511352006 1971 10.7950724684789 1972 11.569623248615 1973 15.2868291720341 1974 17.7413251843913 1975 17.6297368682091 1976 17.7794669785436 1977 20.0349579551588 1978 26.4972579714267 1979 26.7433292189859 1980 28.2983304157393 1981 29.1214717664453 1982 26.9051123853691 1983 27.0980542308048 1984 24.5361663052268 1985 23.1270367507987 1986 20.9790020845972 1987 20.7035817452358 1988 22.6002018545775 1989 21.7821979556481 1990 20.4486044315213 1991 19.3747877756205 1992 20.417269034707 1993 20.4477799303009 1994 12.5996993774182 1995 11.3318138178179 1996 12.3392499603056 1997 12.2268563761648 1998 11.4628108591656 1999 11.9829509071692 2000 14.5755223435769 2001 11.237106650157 2002 11.8953781578597 2003 13.0371551015907 2004 14.3643865711573 2005 15.6269414988724 2006 15.7726987789924 2007 16.1945509457157 2008 18.8654140228838 2009 19.4173530538773 2010 21.3137479203656 2011 23.8744426736655 2012 24.4324813772449 2013 26.3165131362675 2014 27.3169375684194 2015 27.3046862692017 2016 27.7982798735302 2017 29.664784802757 2018 29.5516165860052 2019 29.516665832367 2020 29.306753974363 2021 29.9015680025233 2022 32.3729350761131 2023 31.1258819848995