Year current US$ 2002 2000000 2003 2000000 2004 9000000 2005 7000000 2009 7000000 2010 22000000 2011 10000000 2012 2000000 2013 2000000 2014 1000000 2015 300000.011920929 2016 300000.011920929 2017 7000000 2018 4000000 2019 3000000 2020 899999.976158142