Year constant 2010 US$ 2007 5281491040.4361 2008 5434614502.43265 2009 4469686014.29181 2010 4136344898.66025 2011 4073645486.76342 2012 3944599079.27549 2013 4132201964.09393 2014 4171995150.8161 2015 4357256376.96663 2016 4397574935.82583 2017 4511910923.47683