Year	current US$
2012	2064617.6350255194
2013	3125092.822604473
2014	9466374.87041943
2015	12900564.514280912
2016	18459860.065835487
2017	19053331.050983492
2018	20116552.728902835
2019	26221368.443221927
2020	21192307.692307696
2021	24300440.81340733