Year current US$ 2006 1019999.98092651 2007 850000.023841858 2008 839999.973773956 2009 629999.995231628 2010 680000.007152557 2011 370000.00476837205 2012 230000.004172325 2013 790000.021457672 2014 629999.995231628 2015 577093.720436096 2016 474737.137556076 2017 371908.45608711196 2018 279034.584760666 2019 681023.955345154 2020 323424.309492111 2021 355192.89970397897 2022 254354.447126389