Year	constant 2011 international $
1997	3169919234.07663
1998	3443905302.41533
1999	3357015213.61682
2000	3317998377.03785
2001	3343745275.03202
2002	3618938770.97875
2003	3501043803.39984
2004	3641085555.53583
2005	4102565115.02609
2006	4530378942.69435
2007	4464057368.75481
2008	4618811061.60694
2009	4633288267.04045
2010	4621506735.94468
2011	4984633773.41078
2012	5181669871.24061
2013	5727391906.97136
2014	5943347148.14085
2015	5821518041.17385
2016	5722292811.23674
2017	5731595786.98509
2018	5972321608.09959