Year % of GDP 1994 0.8446012447606301 1995 1.8159650890100032 1996 2.3048784781797917 1997 1.313813478560545 1998 1.5050896574463926 1999 1.5569031743418826 2000 1.614827720658256 2001 1.3667324039128217 2002 1.2162097539330239 2003 2.664478735399427 2004 3.528392163589823 2005 3.3826516600577254 2006 5.283749922259264 2007 5.325160031840134 2008 3.330093929480092 2009 2.094369069024884 2010 2.156170785364921 2011 3.5679569822815775 2012 3.572642487681051 2013 3.166868803975378 2014 3.3743893149816224 2015 4.892917910046132 2016 3.5817484419260497