Year current US$ 2006 300000.011920929 2007 2000000 2008 11000000 2009 11000000 2010 16000000 2011 13000000 2012 19000000 2013 17000000 2014 18000000 2015 17000000 2016 16000000 2017 16000000 2018 16000000 2019 18000000 2020 7000000