Year current US$ 2011 19999.9995529652 2012 455185.890197754 2013 1513512.37297058 2014 1383219.00367737 2015 1298985.00442505 2016 877089.321613312 2017 691900.014877319 2018 142569.49722766902 2019 877372.860908508 2022 29072.9999542236