Year % of GDP 1962 12.535205069529983 1963 11.165550318365975 1964 11.855710176475139 1965 15.082659414585246 1966 15.808660692991694 1967 16.53591507321547 1968 15.862259291058459 1969 16.03583810080888 1970 14.727512980339252 1971 14.563628546861532 1972 15.056914932042595 1973 19.023095258974624 1974 20.99251861438573 1975 24.09853023802885 1976 24.625704796117027 1977 24.684763971291048 1978 27.195528024257225 1979 28.563995595961973 1980 28.762853304166665 1981 28.825479159405525 1982 25.63171605340273 1983 21.22673136275498 1984 22.30123562154482 1985 20.773507036593085 1986 22.902557889638327 1987 22.441080986661063 1988 20.318236667233407 1989 18.84090932385525 1990 17.808913266960012 1991 19.10888214788277 1992 18.493064537095822 1993 19.66861796082133 1994 24.413565389753472 1995 22.020831135783382 1996 22.129436373681113 1997 22.918236466221234 1998 20.112068139073944 1999 18.97058345071951 2000 17.3392448147808 2001 17.967783807718714 2002 18.099700704338442 2003 20.627024403448736 2004 20.06819024850992 2005 20.903184411343133 2006 21.950384254905828 2007 21.3245681130039 2008 22.24829434366064 2009 18.91596996989736 2010 23.834958440654084 2011 24.661570008643498 2012 21.26421133099233 2013 22.01698324942386 2014 22.65880641001852 2015 21.878682412948578 2016 19.806173956124677 2017 20.600042901810074 2018 22.782084795333684 2019 21.6853116218616 2020 20.041460349616756 2021 23.998127374423074 2022 27.68643514265548 2023 19.608333438096263