Year	constant 2011 international $
1990	542995809985.357
1991	497326366082.622
1992	449090688889.827
1993	385202567489.259
1994	296860035262.927
1995	260643110895.209
1996	234578799872.194
1997	227541435812.515
1998	223218148567.824
1999	222771712276.408
2000	235915243299.818
2001	257628162317.696
2002	271151836031.313
2003	296954522642.936
2004	332912018762.205
2005	342890587224.626
2006	368401312255.671
2007	396375754086.838
2008	405508365532.184
2009	345661229467.658
2010	358915221129.055
2011	378531847053.314
2012	379435331807.793
2013	379333910074.22
2014	354477604622.423
2015	319834600676.306
2016	327641746449.458
2017	335721567047.296
2018	346919524024.503