Year current US$ 1997 59999.9986588955 1998 310000.002384186 1999 150000.005960464 2000 319999.99284744303 2001 209999.993443489 2002 90000.0035762787 2003 170000.00178813902 2004 469999.998807907 2005 400000.00596046395 2006 180000.00715255702 2007 289999.99165535 2008 439999.997615814 2009 389999.98569488496 2010 370000.00476837205 2011 349999.99403953605 2012 250000 2013 109999.999403954 2014 140000.000596046 2015 100000.00149011599 2016 9999.99977648258 2017 9999.99977648258 2019 0 2020 0