Year current US$ 2008 1441821740328.4497 2009 1309157007055.4314 2010 1546896452092.836 2011 1604501234774.0461 2012 1815733158536.27 2013 1880885797389.4668 2014 2013517472908.6443 2015 1592349861226.2803 2016 1473779856348.0974 2017 1529491906980.9253 2018 1711463540192.1294 2019 1821965874115.8914 2020 1678538403891.812 2021 1766556566052.5076 2022 1929939322276.4824 2023 1894331319608.0027