Year % of GDP 1984 2.6016260924053167 1985 1.314550638717995 1986 2.8435947710066833 1987 2.2584018421247505 1988 -4.770011693666697 2000 5.902363791064477 2001 3.3904880395878183 2002 19.29054965815881 2003 14.200292065938678 2004 15.498737017159822 2005 20.19291197186534 2006 24.41832066843512 2007 20.328240295977206 2008 16.140964647781068 2009 17.173783683177117 2010 13.510201924436 2011 22.63238156375339 2012 10.072585545596569 2013 8.814382217916153 2014 12.250706408467783 2015 13.66319922048238 2016 20.33452566155369