Year	current US$
2007	520025084875
2008	550095807653
2009	474826217090
2010	481535630281
2011	536979893699
2012	529273194879
2013	549809186868
2014	569807277117
2015	517447116648
2016	539039847549
2017	533442739563
2018	571566699717
2019	580287293737
2020	528089384026
2021	633865462959
2022	693609669949