Year % of GDP 1970 1.1572443889003012 1971 0.8695421118102746 1972 0.4605138061088102 1973 0.2592636044211696 1974 1.2207016415155505 1975 0.39002894757960566 1976 0.24449821897257898 1977 0.05010226952706848 1978 0.05755507978027326 1979 -0.140234232687554 1980 0.22256444864155786 1981 0.16008879803415343 1982 0.30964987331645555 1983 0.10766316602584447 1984 0.38323342307924024 1985 -0.18657670909155782 1986 0.1217481113639317 1987 0.12510291310188704 1988 0.22218628940722832 1989 0.10503221528057843 1990 0.2003386257946297 1991 0.23873887822862788 1992 0.1594026276850652 1993 0.35669464347734653 1994 0.49815258811732277 1995 0.9963739081312843 1996 0.7845134422038091 1997 2.04486199924953 1998 1.5704582499097708 1999 2.405665622811323 2000 1.5337873158254214 2001 4.7739852016877204 2002 2.4718013611048013 2003 2.4607828032450985 2004 1.840139786307522 2005 2.0418700148296725 2006 1.272838315786547 2007 2.472774812029516 2008 3.2168723263587906 2009 2.628390622332973 2010 1.66923214011641 2011 1.884805203954255 2012 2.58896496238031 2013 2.237608147883667 2014 2.8281249195140052 2015 3.1958046872557286 2016 2.0177790701916933 2017 1.0763526830263406 2018 1.3377465299000622 2019 1.4972066467733673 2020 1.4814546101571369 2021 5.038473145024367 2022 1.7182697326247272