Year % of GDP 1970 1.7838158237248467 1971 1.8831425058270566 1972 1.9071785442422649 1973 1.7560092706994233 1974 1.050622907498933 1975 1.6951931511701732 1976 0.8905235197652277 1977 1.0865462453059418 1978 0.9592489264299261 1979 0.8139376810947269 1980 -0.18981683678643835 1981 0.5417313721533024 1982 0.44841751269852687 1983 0.5080036565723328 1984 0.2583113440236971 1985 0.6484768641022326 1986 0.1871432459269448 1987 0.924280885381887 1988 0.8753454834480962 1989 2.471883373638569 1990 0.8675906316972279 1991 0.6446358426049535 1992 0.9748293492268437 1993 1.3550468412920251 1994 1.7732494371494538 1995 0.4563383647841757 1996 0.45029336053014984 1997 0.5883873115175376 1998 0.6408785173246966 1999 1.7144093877044515 2000 1.801106870441863 2001 2.1574429857935606 2002 2.467099047056853 2003 2.542329983469294 2004 1.8171562141081647 2005 2.9698632505952487 2006 2.317455658011569 2007 2.798178766793391 2008 2.8731031090306756 2009 3.5708688970373244 2010 3.189069318350461 2011 3.59131357997848 2012 2.834466967797157 2013 2.2966264778481627 2014 1.8553877011973785 2015 2.033251531693535 2016 2.0134964718219233 2017 2.5756349579715865 2018 2.016798929262597 2019 1.511376157704927 2020 1.4488109745946631 2021 2.0084783557167896 2022 1.7384535753828392