Year	current US$
1995	6600000
1996	19200000
1997	24100000
1998	35900000
1999	60500000
2000	121441940
2001	203146500
2002	364817563.091384
2003	650850447
2004	1219483642.80936
2005	1893131774.85868
2006	2958485460.45202
2007	4212277481.71938
2008	3461671985.15995
2009	2934061283.58183
2010	3005774880.43767
2011	3409435906.80047
2012	3432439704.72868
2013	3386493735.39602
2014	3457352394.12732
2015	3181475768.05297
2016	2396148203.76026
2017	2690697275.00438
2018	2680081027.61834
2019	2660169693.95828
2020	2080834887.20674
2021	2584576460.57078
2022	2373101120.17408