Year % of GDP 1960 -11.967014595792321 1961 0.45180690180081473 1962 3.8363622762035483 1963 1.3664623422915239 1964 2.014146787944148 1965 5.349794783992843 1966 9.040580996309963 1967 6.164357048691276 1968 2.733077009646302 1969 1.8867846947951672 1970 1.1842025 1971 6.5388986903386614 1972 5.603859806763285 1973 20.198690149006623 1974 28.81477771469127 1975 11.253040267639902 1976 4.825300110926234 1977 6.914778510638298 1978 9.984673171961674 1979 24.745057215686277 1980 35.65482796892342 1981 30.090455971940187 1982 46.49295774647887 1983 44.619619744744746 1984 46.39540949400104 1985 31.067162134322206 1986 15.615794507446374 1987 22.84178279960193 1988 18.81638846737481 1989 27.82368984904681 1990 48.64087664041995 1991 34.11279849095876 1992 45.843178838227715 1993 40.992665793974474 1994 38.783929516674135 1995 37.676758189736795 1996 41.297330153112256 1997 37.66988566792063 1998 30.33423354490914 1999 48.025916897812735 2000 64.92741623991276 2001 52.15035205292193 2002 51.90907860705972 2003 57.493627020376024 2004 49.496038411108394 2005 56.395273722580896 2006 57.61095272455828 2007 49.437852100698 2008 55.768762568956646 2009 47.70256936444247 2010 60.18159932650357 2011 59.47362399963782 2012 62.53644876449482 2013 59.93030100210043 2014 54.9142763996504 2015 41.175690792893626 2016 33.144088580207196 2017 47.20285613138383 2018 53.364978591901156 2019 46.72197182338159 2020 35.86302530506266 2021 42.10384002530014 2022 50.44217398170247 2023 42.7924171948166