Year % of GDP 1970 4.14716005325317 1971 4.28235006332397 1972 4.45015001296997 1973 4.51547002792358 1974 4.65594005584717 1975 5.12796020507812 1976 5.23765993118286 1977 4.95401000976562 1978 5.1597900390625 1979 5.03815984725952 1980 5.00896978378296 1981 5.36780977249146 1982 5.36298990249634 1983 5.30378007888794 1984 5.29446983337402 1985 5.29721021652222 1986 5.49995994567871 1987 5.3761100769043 1988 5.19073009490967 1989 5.01816987991333 1990 4.95725011825562 1991 5.10321998596191 1992 5.2969799041748 1993 5.2519998550415 1995 5.42834997177124 1996 5.25990009307861 1998 6.10374021530151 1999 6.11233997344971 2000 5.58880996704102 2001 5.57547998428345 2002 5.52213001251221 2003 5.36183023452759 2004 5.30243015289307 2005 5.24937009811401 2006 5.22652006149292 2007 5.14690017700195 2008 5.26395988464355 2009 5.73024988174438 2010 5.70047998428345 2011 5.59226989746094 2012 5.48040008544922 2013 5.54711008071899 2014 5.44761991500854 2015 5.45658016204834 2016 5.4796199798584 2017 5.37159013748169 2018 5.22655010223389 2019 5.21750020980835 2020 5.56900978088379 2021 4.96000003814697 2022 4.77447128295898