Year current US$ 2011 870000.004768372 2012 569582.462310791 2013 1036619.78244781 2014 1337531.08978271 2015 1307276.8449783302 2016 2240820.1694488497 2017 1247621.05941772 2018 1065350.89015961 2019 1110240.10181427 2020 186273.649334908 2021 588500.0228881841 2022 231479.57026958498