Year current US$ 2009 1250000 2010 3380000.1144409203 2011 3980000.01907349 2012 6590000.15258789 2013 8680000.30517578 2015 8853510.85662842 2016 11617589.950561501 2017 14751479.1488647 2018 18322189.331054702 2019 15350343.704223601 2020 15307749.74823 2021 11788000.106811501 2022 1404279.94728088