Year % of GDP 1980 0.5120565179211553 1981 0.3610556113099131 1982 0.24167861265715135 1983 0.12947897661688415 1984 0.09995830034628841 1985 0.1484707992156143 1986 0.18978497964032837 1987 1.830844851265808 1988 1.0909861762648292 1989 1.8049984461451067 1990 8.148851786963139 1991 4.550934845441809 1992 2.370408908983473 1993 4.629210140296518 1994 4.295388163424682 1995 4.346998124433203 1996 5.645351003914209 1997 14.764567146898996 1998 34.63278606789384 1999 128.9684764124529 2000 70.22947685736096 2001 27.239712404512222 2002 13.230074962664895 2003 16.74038470322169 2004 16.55534539322104 2005 19.83323298566411 2006 31.638236173794844 2007 38.10681146078298 2008 22.98382209215039 2009 17.902688869937556 2010 13.678749752401606 2011 8.119890284316366 2012 6.22960920666075 2013 10.050237392886476 2014 14.036627047624329 2015 9.169315514070114 2016 6.328822529681734 2017 7.611888543629506 2018 5.605013431810381 2019 7.515645554855645 2020 8.7450925849223 2021 7.681328745352967 2022 8.574513479885532