Year % of GDP 1970 4.161200422927486 1971 3.616834844640212 1972 3.973287105415986 1973 4.755360583873014 1974 4.77912572790879 1975 6.177523065318592 1976 7.689143461213149 1977 8.113524210246311 1978 7.60451008126125 1979 7.040591943455878 1980 7.8079110927166155 1981 8.096250492791418 1982 6.330688771940693 1983 4.990120974114988 1984 5.184160586833328 1985 4.125042398662409 1986 33.7214177506075 1987 33.99721953526142 1988 32.10143313619519 1989 33.38898857592995 1990 35.85095263259545 1991 32.346273864870994 1992 26.246442857696856 1993 27.0017809157451 1994 24.77294638322078 1995 28.241432373498803 1996 24.05498178329067 1997 23.65451932602718 1998 23.508643900973482 1999 23.618895102583696 2000 29.261866888769188 2001 32.28677948869944 2002 31.988032365701187 2003 24.854890545912063 2004 28.750551077729618 2005 39.06625224485233 2006 47.132486502925055 2007 38.539187154467 2008 38.88469734842895 2009 31.41327965383717 2010 41.964156982894636 2011 52.158119837069364 2012 54.75222882603842 2013 44.82718259922079 2014 50.555485843234905 2015 45.17749105455305 2016 79.60720504080581 2017 78.23980187924084 2018 62.10661330803025 2019 55.15938702469489 2020 89.280198625554 2021 89.64804437587965 2022 64.74523341470785 2023 60.69718976253118