Year % of GDP 1960 4.861965447137282 1961 5.4288860387775175 1962 5.531983697231226 1963 5.5794920814370155 1964 2.7988361825162977 1965 4.652596543122595 1966 5.051730849813657 1967 4.928506231559421 1968 6.204738146883164 1969 5.817213740564103 1970 5.455240232863335 1971 5.511467516621562 1972 6.399727195178959 1973 6.311797580311741 1974 8.320763172734084 1975 7.348254347929986 1976 8.205252445405925 1977 7.960266865406605 1978 7.468419216048063 1979 8.246134387017975 1980 8.95052102371656 1981 9.276410607464173 1982 8.195716127762587 1983 7.884149398306042 1984 10.960913625854971 1985 9.921464694113757 1986 8.990563133765564 1987 11.358816803425265 1988 10.998700186601544 1989 8.748862592007544 1990 10.96669141195167 1991 10.447548442435947 1992 8.846480368621105 1993 8.95154328138584 1994 14.201621145419594 1995 14.140556539991458 1996 10.563605205570695 1997 10.81253099846768 1998 12.80810302200564 1999 8.354005505730994 2000 8.844717485267703 2001 9.044082767419297 2002 8.865365632191812 2003 9.220431658405724 2004 10.881587301295061 2005 9.841847478090635 2006 10.956863502702097 2007 10.348542216799231 2008 10.149327052384766 2009 13.78897086142336 2010 20.515848855400787 2011 26.195500519627085 2012 26.5980854179657 2013 27.076985453032513 2014 26.932004154154 2015 26.107645535702417 2016 25.91596480425103 2017 26.452385635050067 2018 28.078906141921877 2019 29.25769566039395 2020 31.776865693980987 2021 32.88771004553773 2022 31.534413018246816 2023 28.85556518535566