Year	current US$
2008	3538468.89494573
2009	3376915.75028141
2010	4425354.67916179
2011	2475744.3961191
2012	5796610.16949152
2013	5796610.16949152
2014	38372881.3559322
2015	6187226.01409467
2016	2426748.15746899