Year current US$ 2010 807133476.4753705 2011 1152920361.2648385 2012 1948458415.091407 2013 2243705419.1755443 2014 822794476.0357432 2015 924848189.8669633 2016 374242289.6380494 2017 567812828.999212 2018 929048635.1888012 2019 817036462.3739332 2020 439296726.1995455 2021 631166581.1706948