Year current US$ 1995 16000000 1996 15500000 1997 17000000 2003 8000000 2004 6000000 2005 7000000 2006 8000000 2007 13000000 2008 12000000 2009 12000000 2010 14000000 2011 16000000 2012 13000000 2013 10399999.6185303 2014 55400001.5258789 2015 5400000.09536743 2016 7199999.80926514 2017 8500000 2018 10399999.6185303 2019 10000000 2020 5199999.80926514