Year current US$ 2005 193275405.883789 2006 197322219.84863302 2007 187218856.81152302 2008 181248626.70898402 2009 159363357.543945 2010 159599502.56347698 2011 171080215.45410198 2012 186714126.586914 2013 191342971.80175802 2014 212414749.14550802 2015 217735290.52734402 2016 233345596.31347698 2017 232939880.37109402 2018 216170288.085938 2019 217505432.12890598 2020 216807189.94140598 2021 174360671.99707 2022 189838577.27050802