Year current US$ 2010 64112398749 2011 68043635552 2012 73814487138 2013 75188519962 2014 77034398778 2015 74781822670 2016 78172198648 2017 85907116044 2018 90481007000 2019 89118093486 2020 82139506430 2021 87103765625