Year current international $ 2000 227.57218454818488 2001 244.4330232189843 2002 247.95668027804305 2003 252.30435522062456 2004 264.37950433261733 2005 273.6164167987963 2006 274.6859429352037 2007 294.0520791191815 2008 309.7729099091712 2009 358.5512925302163 2010 379.63023730768333 2011 377.52212508808685 2012 393.07175795659623 2013 394.29314103823776 2014 390.40982392784923 2015 412.82568291918324 2016 452.923366263867 2017 475.54755253373423 2018 473.21193879552214 2019 445.85713373269203 2020 412.165300030068 2021 423.115433782021