Year current US$ 1996 629999.995231628 1998 189999.99761581398 1999 180000.00715255702 2000 280000.001192093 2001 119999.997317791 2002 79999.9982118607 2003 70000.0002980232 2004 490000.009536743 2005 170000.00178813902 2006 180000.00715255702 2007 50000.0007450581 2008 200000.00298023198 2009 159999.99642372102 2010 449999.988079071 2011 670000.016689301 2012 340000.00357627904 2013 479999.989271164 2014 119999.997317791 2015 70000.0002980232 2016 50000.0007450581 2017 59999.9986588955 2018 109999.999403954 2019 90000.0035762787 2020 19999.9995529652 2021 9999.99977648258