Year	current US$
2011	20430000.128224496
2012	19273537.486791614
2013	23092622.444033604
2014	22594122.258946292
2015	29946663.90120984
2016	24131123.95163627
2017	26954565.93669951
2018	22489086.72202379
2019	27921694.08686458
2020	17565236.296970394
2021	36641299.98325369
2022	24625734.377652414