Year	constant 2010 US$
2006	3799254157.626
2007	4041670904.18029
2008	4348541676.96463
2009	4039580229.30346
2010	4110399867.54967
2011	4312184016.88367
2012	4233409002.5695
2013	4396527080.03438
2014	4446416131.5209
2015	4640409539.81037
2016	4711497553.29666
2017	5000356887.4789
2018	5194721358.19234