Year current US$ 2005 379392436.265946 2006 371219915.390015 2007 370143104.13598996 2008 356483541.84627557 2009 325480624.6459482 2010 313820281.98242223 2011 324477663.0401613 2012 333273893.1179051 2013 333051115.45324284 2014 361074605.8225631 2015 369343863.4872438 2016 389910528.1829836 2017 396853107.92922926 2018 387258348.85984606 2019 400476244.6284291 2020 424035998.58283997 2021 386485269.784927 2022 388319649.4579315