Year	Percent of GDP
1999	-1.526
2000	0.548
2001	1.42
2002	7.649
2003	13.473
2004	15.1
2005	13.254
2006	14.991
2007	13.795
2008	13.446
2009	19.82
2010	25.519
2011	26.759
2012	28.323
2013	29.11
2014	29.418
2015	28.056
2016	24.912
2017	21.543