Year	% of GDP
2006	79.11794852327081
2007	85.30293308488103
2008	92.78398848930168
2009	87.59636501325255
2010	82.88795721989305
2011	81.32498503071476
2012	85.42893940664081
2013	76.52073732718894
2014	77.03962538073957
2015	78.48752388714992
2016	78.23141494517361
2017	79.64053146237369
2018	87.73132694207814