Year	current US$
1996	1336052839.50715
1997	1507817364.97624
1998	1270595935.5854
1999	839291516.828884
2000	993229040.623207
2001	1214217479.80826
2002	1453175545.94432
2003	1816225402.2277
2004	2462967828.61133
2005	2883947208.25394
2006	3266664906.20381
2007	4125246763.61726
2008	5757754286.90146
2009	4978748425.02429
2010	6657470284.5819
2011	8142332477.50821
2012	8704671167.64837
2013	9448149513.93791
2014	9375407928.58259
2015	7066335868.40404
2016	7627551245.60779
2017	9190034402.44331
2018	10673164437.0841
2019	11165403702.7881
2020	10801154634.3049
2021	12338542741.1436