Year current US$ 2007 9550000.008195646 2008 33169999.867677674 2009 42040000.09223817 2010 50080000.34093857 2011 61730000.28543171 2012 57222957.13704079 2013 38349832.944571935 2014 56678248.64387512 2015 64038381.05127214 2016 41872370.42747438 2017 45344681.32688195 2018 89405081.0952358 2019 110962553.17330363 2020 138557789.14690015 2021 156987710.17417312 2022 135234390.7300383