Year current US$ 2006 550000.011920929 2007 500000 2008 419999.986886978 2009 270000.010728836 2010 469999.998807907 2011 409999.99642372096 2012 189999.99761581398 2013 270000.010728836 2014 310000.002384186 2015 378214.091062546 2016 766846.299171448 2017 560545.6233024601 2018 470558.255910873 2019 497853.130102158 2020 323919.713497162 2021 1069232.46383667 2022 1164299.72648621