Year current US$ 2003 4900000.09536743 2004 7099999.90463257 2005 9399999.61853027 2006 3930000.0667572 2007 4500000 2008 3700000.04768372 2010 2400000.09536743 2011 5099999.90463257 2013 3700000.04768372 2014 2799999.95231628 2016 1600000.02384186 2017 15260000.2288818 2018 4230000.01907349