Year current US$ 2006 469999.998807907 2007 699999.988079071 2008 529999.971389771 2009 759999.990463257 2010 920000.016689301 2011 819999.992847443 2012 439999.997615814 2013 639999.985694885 2014 550000.011920929 2015 818668.9019203191 2016 822178.840637207 2017 450929.999351501 2018 559350.907802582 2019 288176.92399025004 2020 142581.37345314 2021 554348.349571228 2022 590203.821659088