Year current US$ 2012 376722.7581702172 2013 332656.9721102719 2014 386060.0031912327 2015 799980.0220131872 2016 600929.9857541921 2017 440319.9991211295 2018 1451321.6316699993 2019 2559090.0634415494 2020 1380042.4523651593 2021 1765400.0315815262 2022 2076916.6983663994