Year current US$ 2001 3200000.04768372 2002 3200000.04768372 2003 3299999.95231628 2004 6099999.90463257 2005 3799999.95231628 2006 8100000.38146973 2007 9899999.61853027 2008 9899999.61853027 2009 7099999.90463257 2010 7699999.80926514 2011 11800000.1907349 2012 14199999.8092651 2013 17899999.6185303 2014 20700000.762939498 2015 23200000.762939498 2016 20500000 2017 34299999.237060495 2018 36000000 2019 39000000 2020 33000000