Year current international $ 2000 237.248127859416 2001 254.893486962037 2002 277.092413954804 2003 300.072376248032 2004 320.04674949602 2005 330.563838918294 2006 393.616006109719 2007 443.050297516397 2008 485.491056894816 2009 547.632533437147 2010 581.583710609246 2011 651.889530280296 2012 726.291324237909 2013 798.808401990074 2014 852.681900134323 2015 909.943541878387 2016 998.217495499213 2017 1124.63498569632 2018 1198.64140448396 2019 1220.40799679148 2020 1365.62307059971 2021 1472.72204057164 2022 1507.66605556234