Year % of GDP 1973 1.64596273291925 1974 2.85057471264368 1975 6.95810564663024 1976 8.35260115606936 1977 6.07458292443572 1978 3.89084507042253 1979 3.7150127226463106 1980 3.70026525198939 1981 3.9448966812774002 1982 5.12655601659751 1983 4.51634877384196 1984 4.6747058823529395 1985 8.43686354378819 1986 5.35585585585586 1987 3.08608876973488 1988 2.6637660140198203 1989 1.5837366892546 1990 0.9058282796042131 1991 0.582892778319561 1992 0.969692301108401 1993 0.9509522359786211 1994 1.00593672094627 1995 0.915520386083765 1996 0.7878309335810499 2000 1.7659772484290002 2001 2.01794562341177 2002 2.29328668097935 2003 2.19971682743689 2004 2.8093248337512597 2005 1.41048583687429 2006 0.805815134799291 2007 0.914399668478094 2008 1.00888107540392 2009 0.981015648111865 2010 0.9052103956147081 2011 0.878175345601621 2012 0.825543220373685 2013 0.8436933000950889 2014 0.9516521700353929 2015 1.0848654709788699 2016 1.1541282758456801 2017 1.25334268912328 2018 1.29081562879598 2019 1.29961278504611 2020 1.40257741131547 2021 0.995030769840688 2022 0.569847554986499