Year current US$ 2006 600000.023841858 2007 529999.971389771 2008 400000.00596046395 2009 660000.026226044 2010 620000.004768372 2011 469999.998807907 2012 769999.980926514 2013 389999.98569488496 2014 600000.023841858 2015 624071.002006531 2016 571007.311344147 2017 455033.242702484 2018 606572.62802124 2019 391424.387693405 2020 420343.548059464 2021 194007.083773613 2022 260628.581047058