Year current US$ 2011 11979999.959468842 2012 7335670.9405779885 2013 10938232.809305191 2014 9077160.120010376 2015 17951384.022831906 2016 10695265.084505074 2017 14770081.371068943 2018 18789734.482765198 2019 21392786.86046599 2020 9020391.90381765 2021 22180899.739265457 2022 15280914.247035975