Year current US$ 2011 879999.995231628 2012 43305.7881891727 2013 223254.36770916 2014 377985.805273056 2015 361199.408769608 2016 419900.894165039 2017 218804.195523262 2018 187549.114227295 2019 204834.95295047798 2020 483819.127082825 2021 1011199.9511718801 2022 573491.752147675