Year current international $ 2000 179.6255367892239 2001 189.06014765461177 2002 196.05480726529188 2003 194.05621819101896 2004 198.3742494293809 2005 200.25960837193858 2006 207.8858672297198 2007 223.2355181280643 2008 231.6320333439811 2009 258.095822718509 2010 258.6280053996613 2011 257.5823624324234 2012 294.6670225303832 2013 325.4297406881592 2014 328.18442689771086 2015 348.4524378903032 2016 361.57529341822567 2017 384.561533786467 2018 371.80371630094146 2019 372.67884091509575 2020 355.29734585721644 2021 356.7579411164551