Year	constant 2010 US$
2001	2507749006.48949
2002	2155897958.84764
2003	2295458846.90152
2004	2695838443.7774
2005	2950962864.9994
2006	3081855217.01933
2007	3236770344.85182
2008	4195342652.08966
2009	4555557184.64403
2010	6124409681.22786
2011	6140526548.81004
2012	4811492241.08983
2013	5941457797.99079
2014	7297716291.35925
2015	7984193672.52936
2016	8838673179.69239
2017	12365830734.3406
2018	14818430008.7056