Year	current US$
2007	1425953044
2008	2630515831
2009	3349097070
2010	4856809511
2011	5673719171
2012	3649892914
2013	3679007708
2014	4471137035
2015	4436062586
2016	5254484057
2017	5558595285
2018	6636988115
2019	6994469286
2020	6984613402
2021	8026987930
2022	8356833712