Year current US$ 2012 142948.21023941002 2013 231896.713376045 2014 184090.003371239 2015 170210.00385284398 2016 111610.002815723 2017 215949.99730587 2018 24971.1088836193 2019 32960.0013792515 2020 131262.674927711 2021 204600.006341934 2022 111791.92364215899