Year % of GDP 1961 6.504008841769608 1962 6.895860986159624 1963 7.617159681289893 1964 7.546163705384532 1965 7.42601586626141 1966 7.709119982986977 1967 7.463210800586005 1968 7.85404959872955 1969 8.139915513583295 1970 9.074983713450308 1971 9.572098151456228 1972 9.7780535873703 1973 10.02850905217822 1974 9.063697228508918 1975 8.845221750281787 1976 9.893975042795644 1977 11.123375737877273 1978 11.564986005954507 1979 12.454796093902313 1980 12.28102568958809 1981 11.680855287558 1982 11.625635241361442 1983 11.784825316144907 1984 11.462714961987015 1985 11.278555429342248 1986 12.017292447650103 1987 12.91194560346512 1988 12.590238178576227 1989 12.3616286368046 1990 11.60442422190763 1991 10.186129432672653 1992 10.619214564366105 1993 10.439752576488067 1994 9.472661150095213 1995 14.439089443897451 1996 14.12365516796534 1997 14.162334709849203 1998 14.993141971410266 1999 15.19084240391294 2000 14.337761871209086 2001 13.775326875604845 2002 13.864307136163148 2003 14.001127756247149 2004 14.623714774984515 2005 15.491708471732524 2006 16.19218652854635 2007 16.76529520517791 2008 17.567720414335028 2009 18.764423532522823 2010 19.58703912348047 2011 20.218853417119842 2012 21.4730202841856 2013 21.780473381494435 2014 24.24502643386352 2015 26.85960544400345 2016 27.863106206326698 2017 29.054077317422895 2018 29.81964702062151 2019 30.109452720738243 2020 30.305733980132572 2021 31.53051681727445 2022 33.50367800371985