Year % of GDP 1960 98.60572937272732 1961 98.61830739250696 1962 98.60539097838613 1963 98.61351819757365 1964 98.60640655770642 1965 23.17029673634946 1966 19.698947179072306 1967 22.52533402142893 1968 21.0232853471829 1969 21.20225323985289 1970 21.04242586678832 1971 22.197361951337573 1972 20.754176072748535 1973 23.031401423155724 1974 19.8860063977985 1975 19.29877459777653 1976 20.840519264347012 1977 23.40856423611111 1978 23.368135582074373 1979 22.169705054378998 1980 24.658470072308255 1981 24.931337568618577 1982 24.490125842006606 1983 25.213269549763034 1984 24.810862714642713 1985 31.350620358047482 1986 30.90768789031656 1987 31.62031817612426 1988 30.924765297896133 1989 31.32554414186336 1990 30.36957530749594 1991 33.55304076703742 1992 33.03381999339944 1993 35.061076262793 1994 33.06987434260709 1995 33.17805406638531 1996 33.36949054488918 1997 33.41912852523769 1998 35.234423041765695 1999 34.58437123577635 2000 34.71071549034488 2001 44.452945851523026 2002 43.55295433818776 2003 44.12663972809514 2004 45.17195188067421 2005 45.834153359619414 2006 47.93390451379334 2007 48.77697584728239 2008 49.20432338063257 2009 48.61377100636262 2010 46.39883791061844 2011 47.90288460121656 2012 47.987452587316035 2013 48.755217008750286 2014 49.564019752791296 2015 50.539896985167644 2016 51.59804408950293 2017 51.84978228659275 2018 51.5904434669289 2019 52.02271626229524 2020 53.93884674175544 2021 51.53723277378247 2022 52.42505443908292 2023 55.359544551077235