Year current US$ 2005 -80058136.0565236 2006 -97216838.1410069 2007 176343872.327536 2008 137543364.139231 2009 283781082.691335 2010 783770597.546588 2011 1180746792.49993 2012 1318580308.29678 2013 845164987.166988 2014 747826871.317685 2015 530163886.692684 2016 929971281.059784 2017 1151666951.94941 2018 1637365366.92633 2019 1531938388.44621