Year current US$ 1991 9999.99977648258 1994 219999.998807907 1995 100000.00149011599 1996 100000.00149011599 1997 180000.00715255702 1999 39999.9991059303 2001 39999.9991059303 2002 219999.998807907 2003 79999.9982118607 2004 90000.0035762787 2005 129999.995231628 2006 29999.999329447703 2007 150000.005960464 2008 720000.028610229 2009 430000.00715255697 2010 5539999.96185303 2011 970000.028610229 2012 2450000.04768372 2013 4639999.8664856 2014 920000.016689301 2015 2339999.91416931 2016 1509999.9904632599 2017 3099999.90463257 2018 4000000 2019 2859999.89509583 2020 730000.019073486 2021 2309999.94277954 2022 1590000.0333786