Year current US$ 2006 19999.9995529652 2007 70000.0002980232 2008 100000.00149011599 2009 59999.9986588955 2010 19999.9995529652 2011 59999.9986588955 2012 300000.011920929 2013 370000.00476837205 2014 340000.00357627904 2015 270000.010728836 2016 140000.000596046 2017 50000.0007450581 2018 39999.9991059303 2019 170000.00178813902 2020 250000 2021 3500000 2022 330000.013113022