Year current US$ 2011 2359999.89509583 2012 13430000.3051758 2013 14140000.3433228 2014 4570000.17166138 2015 8420000.07629395 2016 13310000.4196167 2017 6039999.96185303 2018 -8229999.54223633 2019 7489999.771118159 2020 5690000.05722046 2021 6860000.1335144 2022 2309999.94277954