Year current US$ 2006 1330000.04291534 2007 150000.005960464 2008 250000 2009 600000.023841858 2010 330000.013113022 2011 159999.99642372102 2012 230000.004172325 2013 289999.99165535 2014 340000.00357627904 2015 250000 2016 19999.9995529652 2017 19999.9995529652 2018 39999.9991059303 2019 29999.999329447703