Year	constant 2011 international $
1998	3163433224.60869
1999	3270989886.86727
2000	3303699714.1467
2001	3323521933.48723
2002	3380021849.02932
2003	3447622308.46928
2004	3478650911.49145
2005	3704763151.25471
2006	3875182328.36315
2007	3997739826.58946
2008	3983451849.56322
2009	3696624084.99097
2010	3596237200.11471
2011	3638279467.65443
2012	3683021343.40856
2013	3730139362.19478
2014	3829157005.29757
2015	3937641711.16822
2016	4059562218.72963
2017	4182946420.20744