Year % of GDP 1970 47.4555178252541 1971 44.85065309712752 1972 45.78122419247616 1973 42.882527858481104 1974 41.379792658112216 1975 47.772002367774135 1976 48.089704140731804 1977 46.15440050191318 1978 51.61292975045472 1979 51.58866283725063 1980 42.195334590009445 1981 49.27083098730835 1982 46.75967662080686 1983 42.44116187651073 1984 41.31734359425056 1985 46.4873822286271 1986 45.2492156958962 1987 53.50910860426149 1988 53.98621966441177 1989 48.65899048917453 1990 56.93604860406102 1991 51.276300261949494 1992 47.83461913025518 1993 52.84461089795286 1994 52.26019799687318 1995 51.79758659537536 1996 54.24518424303244 1997 31.65398684073888 1998 37.056021574723495 1999 36.29767539813601 2000 36.95741607064522 2001 36.766387554227556 2002 35.27595898616098 2003 36.8098623722704 2004 36.97049888478358 2005 40.39782482036357 2006 39.480422195441626 2007 38.1693191432177 2008 38.25952180768499 2009 39.154374051488695 2010 37.95308892173746 2011 37.563389671059156 2012 38.08528950625666 2013 38.661581352478294 2014 34.825806878958346 2015 35.15777855080632 2016 36.348764905033356 2017 36.358492091293684 2018 32.5475708900674 2019 32.79675018916278 2020 33.34597853895313 2021 33.03259686359886 2022 33.63492164440138 2023 33.708278699794434