Year % of GDP 1962 1.8137363304703351 1963 1.6879230310167457 1964 2.1085216849338204 1965 2.1499201381636435 1966 2.1310214624610357 1967 2.7467027241712523 1968 3.1095071748632224 1969 3.4152219413859264 1970 2.9070904893412033 1971 2.674099101169664 1972 2.9092074715609084 1973 3.004655201176945 1974 3.154804365943835 1975 4.360937412349397 1976 4.2031718032630785 1977 4.453156549904701 1978 4.420887870632989 1979 3.936405875886869 1980 3.1839777825846656 1981 3.061682164931153 1982 2.904225752397901 1983 3.0955692412418054 1984 2.956214344389808 1985 2.785643963422661 1986 2.993541373120943 1987 2.954504496187763 1988 3.2902006832142954 1989 3.2340417854444383 1990 3.197307596029791 1991 2.833674431060497 1992 2.2572935442428808 1993 2.4755872998937885 1994 2.0293039503542487 1995 1.5242344267982966 1996 1.2112026360024066 1997 1.2142634325046675 1998 1.2210224517789685 1999 1.898146272199832 2000 1.6543449430329014 2001 1.644742180541209 2002 1.6749633236147785 2003 1.4511831274747276 2004 1.488810450478931 2005 1.3029483772470993 2006 1.2824784181851414 2007 1.2820086644701156 2008 1.447871048852504 2009 1.5144128919670552 2010 1.2426774049794198 2011 1.2142734957807029 2012 1.1812538211715464 2013 1.2759963580037732 2014 1.2523236783744873 2015 1.143080255519109 2016 1.0689907007294985 2017 1.0808424249590325 2018 1.0004969775670272 2019 0.9498765146308489 2020 1.0317950923652712 2021 1.0761897126849547 2022 0.9882926583100519