Year	% of GDP
2008	71.73299541748392
2009	72.06122966101512
2010	69.08182589831704
2011	56.1697022840667
2012	52.54183530274392
2013	52.90973119583119
2014	49.548827070449036
2015	47.60927443285136
2016	48.53684612947268
2017	47.89932404402587
2018	44.11518709235882
2019	41.72558070377683