Year current international $ 2000 145.345030393493 2001 135.843707048649 2002 137.277452483834 2003 157.682178175829 2004 172.849002800135 2005 181.180568811153 2006 196.398778023775 2007 209.528453330484 2008 217.229584040908 2009 207.388523136216 2010 220.618301237791 2011 243.632352556202 2012 261.006046893494 2013 275.400132966525 2014 298.598505327162 2015 311.318440138014 2016 330.790908378277 2017 346.198777440781 2018 378.489563772638 2019 399.401832495791 2020 381.05921080499 2021 406.859620282694