Year current US$ 2000 829645 2001 726980 2002 728589 2003 2999812 2004 9115063 2005 2351368 2006 8444233 2007 8001891.000000001 2008 5865925 2009 4934841 2010 2449126 2011 3639685 2012 4629568 2013 6403117 2014 9133051 2015 9903015 2016 10117540 2017 27180739 2018 24668631 2019 43236555 2020 149515546