Year US Dollars 2006 -1435328064.23284 2007 -1700502326.85464 2008 -2194534934.81764 2009 -1971828980.2723 2010 -2073698013.24503 2011 -2224075618.57103 2012 -1891815495.31029 2013 -1958975039.83006 2014 -2121135730.39671 2015 -1832316735.05601 2016 -1854867256.63717 2017 -1908384043.27248