Year current US$ 2003 18100000 2005 95830000 2006 54800000 2007 871800000 2008 160000000 2009 88000000 2011 30000000 2012 34000000 2015 45400000 2016 64040000.00000001 2017 19300000 2019 87000000 2022 22000000