Year % GDP 1964 14.947641690310792 1965 18.108987923410453 1966 15.545076617704762 1967 17.239318387034576 1968 23.524733912597043 1969 32.18621504327264 1970 28.440510363105187 1971 35.00871244651058 1972 47.729937332185365 1973 49.13802343029634 1974 42.006497280139506 1975 49.965411390664684 1976 53.55384693815268 1977 49.90439961349525 1978 53.82227679342273 1979 51.98721524507155 1980 48.508307154984905 1981 52.571054969401345 1982 62.16137017129992 1983 65.06718022901221 1984 66.49738338512 1985 68.72982798987219 1986 69.31185042709089 1987 67.53259217730111 1988 68.14677826911884 1989 63.193715159832465 1990 56.14321672189211 1991 46.28916649103868 1992 7.254817644441563 1993 6.617753019309634 1994 6.48910489572955 1995 5.199387035094845 1996 5.364902708705331 1997 3.9074168571315493 1998 4.563822481552279 1999 5.3880893015189315 2000 5.965639985701516 2001 7.384503885528991 2002 11.25663890370625 2003 10.364272501840462 2004 10.210328391616335 2005 11.500288629842679 2006 11.520815373144458 2007 12.305815626595784 2008 12.13019175816515 2009 14.84757686154575 2010 13.790133198986052 2011 12.565106412338467 2012 12.908643865172234 2013 15.065274898980721 2014 16.42166363601384 2015 19.220345135103376 2016 20.252454823048463 2017 21.860385583363833 2018 22.387148870126026 2019 22.91286953689943 2020 26.117213419446177 2021 22.655828204491826 2022 18.241514134636727 2023 19.474238234202733