Year current US$ 1992 19999.9995529652 1995 119999.997317791 1997 90000.0035762787 1999 119999.997317791 2001 5920000.07629395 2002 17809999.4659424 2003 5150000.09536743 2004 16559999.465942401 2005 19000000 2006 18110000.6103516 2007 43500000 2008 71790000.9155273 2009 98910003.6621094 2010 60830001.8310547 2011 57619998.9318848 2012 31190000.5340576 2013 19229999.5422363 2014 5539999.96185303 2015 29999.999329447703 2016 500000 2017 1559999.9427795399 2018 1149999.97615814 2019 790000.021457672 2020 360000.01430511504 2021 9319999.69482422 2022 11180000.3051758