Year	current US$
2006	709999.978542328
2007	720000.028610229
2008	519999.980926514
2009	620000.004768372
2010	589999.973773956
2011	189999.99761581398
2012	430000.00715255697
2013	839999.973773956
2014	550000.011920929
2015	311081.52866363496
2016	729767.858982086
2017	472832.828760147