Year current US$ 2011 1580000.04291534 2012 1442890.4056549098 2013 1557924.7474670399 2014 2577728.98674011 2015 3531191.8258667 2016 2669666.05186462 2017 3084415.9126281696 2018 2613814.11552429 2019 3030034.3036651597 2020 2494550.2281189 2021 4041200.16098022 2022 4427677.15454102