Year	current US$
2011	34790000.2617389
2012	24909251.27267839
2013	34860475.406050675
2014	31355609.012767654
2015	40646423.90608788
2016	33923831.1117515
2017	32960659.28786992
2018	27819237.327203166
2019	42461376.965045914
2020	21246714.23435211
2021	46236400.634050384
2022	25156641.047447912