Year	% of GDP
2003	3.057609629464272
2004	3.6439542397541733
2005	2.806068064097651
2012	10.550427713938907
2013	14.034867304012474
2014	16.49448734733956
2015	17.03970196311683
2016	15.34754126543507
2017	16.91988893678611
2018	6.38116100422309
2019	13.77551980985876