Year current US$ 2001 600000.023841858 2002 800000.011920929 2003 899999.976158142 2004 1299999.95231628 2005 1200000.04768372 2006 1200000.04768372 2007 1500000 2008 1899999.97615814 2009 1500000 2010 2400000.09536743 2011 2400000.09536743 2012 2700000.04768372 2013 3599999.90463257 2014 3500000 2015 5000000 2016 4500000 2017 5599999.90463257 2018 5800000.19073486 2019 7599999.90463257