Year current US$ 2006 8690000.036731362 2007 7969999.983906745 2008 8429999.958723783 2009 6510000.0724196425 2010 8460000.015795229 2011 4700000.004842875 2012 7059999.965131278 2013 9100000.01452863 2014 7030000.019818544 2015 5717626.154422759 2016 7416326.425969603 2017 7660432.938486339 2018 8145976.658910515 2019 7975415.531545876 2020 8377878.259867429 2021 7799082.372337581 2022 11329291.056841614