Year % of GDP 1964 29.516223820822468 1965 31.2816517335411 1966 31.61819537658464 1967 31.314330958036425 1968 26.8477568480879 1969 25.19268883505836 1970 29.281080416620053 1971 32.38658742040688 1972 29.033823062193566 1973 23.403663578405258 1974 26.13347175061819 1975 34.471270630249464 1976 28.926456862496014 1977 26.72976909514184 1978 24.007849522974464 1979 27.08566900323203 1980 38.21722198182605 1981 39.73843058350101 1982 25.933312558429417 1983 22.035072757315707 1984 12.40520241802528 1985 16.609392137026706 1986 15.010141987829615 1987 23.18885687052458 1988 14.39148808147188 1989 17.670777121822194 1990 34.00077246762751 1991 28.994673623802434 1992 32.90193203000079 1993 28.57728953176821 1994 25.64852115178261 1995 26.44081405480864 1996 32.150296057260036 1997 15.078329372825767 1998 21.271117359299247 1999 19.92127209978604 2000 39.3951193404254 2001 27.984514279558002 2002 30.24919658447723 2003 32.36120072701605 2004 29.490335232898595 2005 29.72180217561161 2006 25.356731736972293 2007 25.061218857770946 2008 26.25558008997087 2009 28.339640666388437 2010 34.480804871694474 2011 56.025961394301675 2012 52.496726587942774 2013 58.826043957319804 2014 52.42551544835556 2015 47.06847668945542 2016 51.85031662247953 2017 48.29397111925056 2018 39.22853373028463 2019 37.94371329297219 2020 36.46686775465776 2021 41.46268605372095 2022 56.216206818616456 2023 67.28020894933964