Year current international $ 2000 225.312388042985 2001 274.655694166092 2002 292.576088063799 2003 313.540850216305 2004 316.230122466745 2005 325.313994125707 2006 350.704390373317 2007 412.897539340658 2008 448.293992565973 2009 435.788075165883 2010 432.610974467857 2011 436.387856239123 2012 397.568820390452 2013 413.235597677786 2014 451.433132584265 2015 433.590313869923 2016 436.559478472917 2017 409.629852374111 2018 427.606808264435 2019 452.95365251189 2020 431.416395854967 2021 479.445520509433