Year	current US$
2012	83168.8344478607
2013	77271.0740566254
2014	72920.0020432472
2015	69459.99711751941
2016	104939.99719619799
2017	482989.99667167704
2018	718872.964382172
2019	641120.01657486
2020	395158.052444458
2021	305599.987506866
2022	304140.597581863