Year	constant 2015 US$
2005	5145449142.49415
2006	7248078259.993739
2007	8644410690.10367
2008	10677909079.342747
2009	11047078006.705938
2010	11607384065.361938
2011	12438105770.167389
2012	15149980176.901476
2013	13725628283.791206
2014	13297698294.73205
2015	11281657691.42139
2016	9844722802.456198
2017	9818211903.33484
2018	9858376179.957638
2019	9773537038.32594