Year	current US$
2012	242443.904280663
2013	166490.450501442
2014	199149.996042252
2015	175449.997186661
2016	87659.9997282028
2017	176459.99789238002
2018	542553.067207336
2019	356730.01408577
2020	254748.404026031
2021	474599.987268448
2022	490869.343280792