Year	current US$
2012	326175.659894943
2013	476880.967617035
2014	307520.002126694
2015	790539.979934692
2016	482250.00500679
2017	703629.970550537
2018	1557821.15459442
2019	2813750.02861023
2020	1692784.07096863
2021	1521499.99141693
2022	897342.205047607