Year	constant 2015 US$
2000	803211758.5351429
2001	861555628.5873388
2002	1135483169.929155
2003	1150733268.1319554
2004	1424460900.9841664
2005	1593460636.1548476
2006	2029758816.9049373
2007	2751185250.55168
2008	2796106904.301218
2009	2833178509.3710194
2010	2469462405.3149834
2011	2901869775.707931
2012	3742426272.97993
2013	3750467241.755428
2014	4161929242.42017
2015	4552482515.353893
2016	4871156291.36659