Year % of GDP 1960 1.77845890655072 1961 1.7029080429656802 1962 1.8088157817713502 1963 1.8558622078968599 1964 1.70494246983742 1965 1.54919986380661 1966 1.65172706900549 1967 1.7399393605292202 1968 1.86747175448971 1969 2.0908884859474197 1970 2.1567565020731196 1971 2.06999062269308 1972 2.33615693267945 1973 2.81380492796106 1974 3.5580392590433503 1976 3.9313383405287103 1977 3.62130898810836 1978 2.58176721881701 1979 2.96493107109859 1980 2.7097547066859797 1981 2.75572096194548 1982 2.5972879496306502 1983 2.40925335363623 1984 1.6347589331167403 1985 1.98257335853662 1986 1.9880536125750798 1987 1.96524714249726 1988 2.45888921422154 1989 2.24292339676955 1990 2.14724666740931 1991 2.01072106794016 1992 2.03646157033354 1993 2.15753564016657 1994 2.17244658668699 1995 2.29413153545476 1996 2.2684076761575 1997 1.9144613761672 1998 1.69729337975318 1999 1.6157758461253902 2000 1.6082266208679599 2001 1.4713788325538 2002 1.47389018793368 2003 1.55084482917909 2004 1.3606265097066301 2005 1.27788393643261 2006 1.2590953916093 2007 1.29142591630931 2008 1.2503290879835398 2009 1.2023233937147 2010 1.17013220060251 2011 1.15341455205701 2012 1.10670418975985 2013 1.18950172893764 2014 1.04312706559466 2015 1.0884630395817199 2016 1.0455851467388901 2017 1.1679608335523501 2018 1.1842471769673801 2019 1.1313313248366799 2020 1.2972400391072498 2021 1.40682590650867 2022 0.9962954697411289