Year	current US$
2008	568992956.076299
2009	564543239.849428
2010	454357295.220905
2011	681475902.285392
2012	852491367.612354
2013	977688265.342749
2014	602991889.858844
2015	585886256.138558
2016	881736265.030113
2017	1209949425.23659
2018	1266975399.50309
2019	1297036620.71105
2020	1058278079.44149
2021	1319266532.69889