Year constant 2015 US$ 2008 5934459412903.543 2009 5173669829179.41 2010 5956759085704.263 2011 6424013412270.771 2012 6718777497636.882 2013 6857519813684.874 2014 6906021975798.241 2015 6690721594537.142 2016 6793845692279.67 2017 7492819891361.878 2018 7937749149191.896 2019 7948732505851.426 2020 7091467593749.062 2021 8226590595068.369