Year % of GDP 1979 2.7640439293107515 1980 6.565321950248568 1981 11.508993501252377 1982 16.51026360106842 1983 16.543677686172174 1984 2.0434842331930847 1985 2.5013815804505053 1986 5.8825944322352655 1987 11.280080816478815 1988 4.436164383889992 1989 7.173542406004603 1990 8.526112580822321 1991 11.87959697435684 1992 16.576479318305147 1993 36.2501699327492 1994 27.769857934163067 1995 8.379266255839424 1996 7.073873722736203 1997 11.691193618763815 1998 11.511311654216254 1999 17.31140546880975 2000 21.10094252329449 2001 11.133589683898876 2002 9.091750656369165 2003 13.560907391263347 2004 21.633284920964737 2005 28.85499520308373 2006 39.808078467219374 2007 54.08893366780967 2008 43.5269470563597 2009 37.52610021970276 2010 45.40621406376893 2011 28.715434421122172 2012 19.369271757846377 2013 18.667343341873973 2014 15.048045262505441 2015 18.578921397032726 2016 16.0892299008339 2017 19.271075510947508 2018 16.575968822906063 2019 17.012110871006804 2020 25.320831458842395 2021 21.757542327362138 2022 21.288944556296787