Year	constant 2015 US$
2000	3822.7616051113123
2001	4108.394209850671
2002	4423.511750376599
2003	4056.051885174465
2004	4502.305795919305
2005	4698.807958274208
2006	4942.3208623819255
2007	5049.388407854008
2008	4674.403052473114
2009	4569.11047979953
2010	4938.441024125928
2011	5094.020642922353
2012	4370.613588446572
2013	5591.462587767775
2014	5341.715327317285
2015	5529.148634257766
2016	5831.735206619801
2017	4841.772716246583
2018	6269.887583292685
2019	5144.59953904503
2020	8215.23730457231
2021	6287.532200293287
2022	5120.722851968122