Year current US$ 2008 3013187806 2009 3533630337 2010 6068691001 2011 11706110437 2012 21344684401 2013 32759456827 2014 36376003017 2015 47523745514 2016 55215146707 2017 74113935162 2018 82611150634 2019 90430118220 2020 101534392934 2021 120466015713 2022 122993363763