Year constant 2010 US$ 2006 4050024185.01797 2007 4536578515.4613 2008 4747283571.33939 2009 4857163757.63118 2010 5025430463.57616 2011 4961908092.65717 2012 5346421167.68807 2013 5557801993.46956 2014 5945964225.97879 2015 6204243483.05579 2016 6615517046.26108 2017 6736479858.96852 2018 6886095315.57984