Year current US$ 2006 600000.023841858 2007 769999.980926514 2008 330000.013113022 2009 620000.004768372 2010 779999.971389771 2011 219999.998807907 2012 280000.001192093 2013 349999.99403953605 2014 959999.978542328 2015 507742.643356323 2016 444175.9288311 2017 596809.804439545 2018 376602.14304924 2019 498423.427343369 2020 642704.904079437 2021 123160.853981972 2022 494755.923748016