Year % of GDP 2008 0.45470516303607916 2009 0.6065687880819826 2010 0.5563363831748565 2011 0.48455507140905935 2012 0.6839871528656555 2013 0.905053944410252 2014 0.5866971347022563 2015 0.6878933894321432 2016 0.24915622962158052 2017 0.29481447744084927 2018 0.5011590855818107