Year current US$ 2007 0 2008 0 2009 899999.976158142 2010 6310000.18119812 2011 4860000.1335144 2012 260285.249911249 2013 1701822.1616745 2014 4059439.1822814895 2015 3578804.43334579 2016 3776275.99239349 2017 1878958.99824798 2018 4322034.859098489 2019 4606061.45858765 2020 -744819.99874115 2021 3839489.903301 2022 851998.329162598