Year current US$ 2006 50000.0007450581 2007 250000 2008 360000.01430511504 2009 330000.013113022 2010 579999.983310699 2011 379999.99523162795 2012 209999.993443489 2013 230000.004172325 2014 70000.0002980232 2015 132501.393556595 2016 205697.119235992 2017 205805.435776711 2018 330142.796039581 2019 331538.498401642 2020 168329.01537418397 2021 426574.409008026 2022 285356.432199478