Year	current US$
2011	7292054957.87379
2012	8582345644.98488
2013	8045351656.98449
2014	12050030642.6416
2015	12259111044.8115
2016	15654910566.3545
2017	17143758244.488
2018	20146977655.1481
2019	19822066132.838
2020	20747482882.7848
2021	19751974014.9667