Year	constant 2010 US$
1996	3545403254.15463
1997	2926718788.91377
1998	3464231754.0494
1999	4262834435.85388
2000	4624769249.50087
2001	4959404644.38611
2002	5479731361.26491
2003	6224431253.7183
2004	6581483494.15593
2005	7036350974.82125
2006	7658290488.86834
2007	8789624669.08649
2008	9980450496.03998
2009	10448297227.9201
2010	10646800832.0473
2011	10820479831.8972
2012	10834089308.4617
2013	11047227439.0877
2014	11405986738.0436
2015	11508506548.2353
2016	11789066775.4511
2017	12054649959.0134
2018	12347233115.6361