Year	% of GDP
2000	15.4659993112502
2001	15.6977399603123
2002	12.7339006860719
2003	10.6143320301325
2004	15.3074980401645
2005	13.3432397021698
2006	18.3461181612156
2007	25.9111823279451
2008	29.2898246143178
2009	18.9577989802548
2010	16.3377310733451
2011	15.5563543159556
2012	16.1041051058989
2013	16.2272422573563
2014	13.7010088718022
2015	12.0304872442613