Year % of GDP 1970 26.33813099527262 1971 26.2197871504236 1972 26.255996062807395 1973 28.73346648318812 1974 33.89969787903927 1975 31.618076757778496 1976 32.85251928693553 1977 33.17588803031575 1978 32.49343903493585 1979 34.44865403516193 1980 36.68784656003667 1981 37.08158395265687 1982 35.850764865210635 1983 35.274305799154504 1984 37.20315480480947 1985 36.806487375661824 1986 34.23399385477831 1987 34.31631532972902 1988 35.043071085908295 1989 36.0861006845737 1990 36.103714430116426 1991 35.59453906100317 1992 35.51814852699089 1993 35.31914898458056 1994 37.099219333362456 1995 39.320330965616364 1996 40.15975209779631 1997 42.23863539978179 1998 42.5790544278001 1999 42.71675591511769 2000 46.67924278161562 2001 45.46351542885993 2002 44.10879588287377 2003 43.85916953781592 2004 46.15853249795858 2005 48.08173328171877 2006 50.83924573583343 2007 51.967046779979874 2008 54.201856016702244 2009 47.26211590973831 2010 51.874162168564105 2011 55.73044656610517 2012 56.15701870196162 2013 55.745513526756135 2014 55.88811276639061 2015 54.87497199839945 2016 53.75658606343289 2017 55.69274996064575 2018 57.03374091251272 2019 56.404877193111474 2020 51.81088621672906 2021 56.32707746816479 2022 63.92748796242608