Year	current US$
2006	2507081364.60615
2007	3289371165.44293
2008	4088002711.77475
2009	3621673915.83509
2010	3615482733.6268
2011	4063577456.59376
2012	3653567642.38349
2013	3990859376.7654
2014	4056323375.38239
2015	3658614396.17059
2016	3837643290.15742
2017	4374226784.09167
2018	4874829509.97769
2019	4900759293.45808
2020	4242809122.18019
2021	5252776808.51927