Year % of GDP 1974 24.539408302117575 1975 28.29916257580133 1976 19.481812235146894 1977 17.412699914829187 1978 15.15220148577641 1979 14.46589362155779 1980 15.274408732565192 1981 13.71348040544203 1982 15.538874582214673 1983 20.802816381294697 1989 50.939808553566714 1990 48.503369377840464 1991 49.39796716184519 1992 54.247982391782834 1993 64.38046427494724 1994 65.84975172192856 1995 63.397913561847986 1996 63.884652710384024 1997 64.45509913178697 1998 70.13274336283186 1999 63.11401821213287 2000 50.64492485459316 2001 55.74460160028315 2002 52.77086921689897 2003 51.38711987148458 2004 48.61554091948472 2005 40.869762721436835 2006 37.87103995435043 2007 42.784624969526234 2008 34.829075542090116 2009 47.64817792240236 2010 36.86463349384697 2011 31.502381667596445 2012 32.198560658798684 2013 35.42559300322453 2014 37.02062445761554 2015 44.84728034649567 2016 47.37271844043688 2017 46.9527773962992 2018 43.68353833459923 2019 45.49177036687722 2020 49.19031782654283 2021 47.318915397225894 2022 43.379505448325396 2023 50.381667547366185