Year % of GDP 1975 6.726206979804938 1976 7.639604338562524 1977 6.8025382412502795 1978 8.163077155394877 1979 7.892393711586848 1980 9.175164233443128 1981 9.909898147279641 1982 9.063983211448383 1983 14.81156721160648 1984 17.818128321891855 1985 24.00755843134331 1986 32.76281606364991 1987 47.517826018320775 1988 38.690524044318174 1989 44.32254068863103 1990 31.902975319213027 1991 24.242258852626 1992 22.427546033013577 1993 30.087696494540356 1994 33.29005268381683 1995 33.822066809095844 1996 40.752631326622485 1997 58.297155521429445 1998 72.26203561679884 1999 102.82856792015012 2000 144.15560749712625 2001 103.3520038927014 2002 81.76184198156982 2003 75.63704068151333 2004 83.30233841600779 2005 99.25723338686704 2006 117.78831615807418 2007 160.82285700737768 2008 139.42296863411704 2009 116.37072463450528 2010 111.58908048977621 2011 104.3482951349231 2012 81.7404813421974 2013 87.30467494503736 2014 99.76870077086635 2015 156.71261977518193 2016 122.6926028460073 2017 115.01278380519298 2018 116.9849169530433 2019 98.31033396856684 2020 144.4291941628689 2021 143.5581039306819 2022 118.83126275216698