Year % of GDP 1961 74.23312883435584 1962 61.19402985074627 1963 60.280373831775705 1964 60.18099547511312 1965 60.61946902654868 1966 58.67768595041323 1967 36.855670103092784 1968 19.186785260482846 1969 16.1 1970 15.54307116104869 1971 13.42925659472422 1972 12.073863636363637 1973 9.85832349468713 1974 3.236587510993844 1975 2.789285113129676 1976 2.0694334501865885 1977 2.5454158697279397 1978 3.2435284475934023 1979 3.12524234199302 1980 2.5458593485310486 1981 2.4767677391310277 1982 2.5331492859220783 1983 2.9380635402045163 1984 2.92100167383242 1985 2.7720710313397676 1986 3.427815583235673 1987 3.509356179974568 1988 3.833152426732827 1989 3.2495282495282494 1990 2.5863028333593006 1991 2.632544487250046 1992 2.335052945967961 1993 2.3961195769839287 1994 2.5325629617699756 1995 2.7755271240413784 1996 2.5041281514393203 1997 2.619262665243452 1998 3.206996927448455 1999 2.952894164417174 2000 2.242058668385281 2001 2.334386044073517 2002 2.3203752017281793 2003 2.206562296800033 2004 1.9368748744702544 2005 1.616481323301971 2006 1.4018718921842743 2007 1.3773684560886827 2008 1.1162433371915237 2009 1.4765610823111734 2010 1.247298919567827 2011 1.100416809294646 2012 1.0155108647463307 2013 1.1422655608379313 2014 1.1127071947209535 2015 1.7297608072877946 2016 1.9853221172153563 2017 1.9845992524783367 2018 1.8494201909959072 2019 1.9947193393858131 2020 2.46933965497997 2021 2.1207797613689743 2022 1.8407969226302803