Year current international $ 2000 140.122220191311 2001 150.244843533151 2002 162.689698569026 2003 176.30248379227 2004 191.266945753225 2005 201.436923890333 2006 208.509130647018 2007 221.819146225257 2008 227.215379295637 2009 238.907186911573 2010 251.827195673783 2011 266.111560775659 2012 281.322446304624 2013 277.470347683768 2014 287.769838039027 2015 300.407301939059 2016 297.968942131888 2017 308.385308987403 2018 318.461885331152 2019 284.599684387568 2020 286.682147084988 2021 304.377114663587