Year current US$ 2005 239999.99463558174 2006 340000.00357627904 2007 1140000.0154972072 2008 479999.989271164 2009 550000.011920929 2010 579999.983310699 2011 800000.0193715092 2012 718882.203102112 2013 637248.694896698 2014 602996.230125427 2015 622319.996356964 2016 506631.61277770996 2017 152099.996805191 2018 58168.0983304977 2019 186890.482902527