Year % of GDP 1975 0.03604182061424754 1980 0.13433924234217604 1992 1.3245104379435586 1993 2.1361412398870963 1994 2.4682642898631877 1995 4.382185008888245 1996 8.372554207120809 1997 5.915641748708234 1998 3.7133311771245623 1999 2.9064195224749776 2000 3.237754225830508 2001 3.676756427015017 2002 3.0568509151438237 2003 1.7513165787155491 2004 2.4619770452865017 2005 6.025383905562795 2006 6.642422509832543 2007 10.038949594831207 2008 7.874680991187563 2009 8.925272519562506 2010 12.491381085789662 2011 11.994843837203897 2012 14.145725408295599 2013 13.583346091641783 2014 11.096894824366913 2015 10.098663531354761 2016 12.369221370358762 2017 12.57184968216332 2018 13.074498066006656 2019 13.522020964796669 2020 14.00948210277033 2021 12.920343105374082 2022 12.129645818797744