Year current international $ 2000 1339.42713200233 2001 1454.5642535551444 2002 1561.0102132943857 2003 1651.9150555154606 2004 1747.8422729364504 2005 1851.7516334810123 2006 1995.2487940293138 2007 2105.2234943235962 2008 2247.4659897459705 2009 2395.9789434245536 2010 2470.3378516472685 2011 2592.587449484234 2012 2675.376450487293 2013 2789.2851781473873 2014 2922.6587791736442 2015 3031.9811767751276 2016 3152.149804525598 2017 3267.056014796475 2018 3406.854376878854 2019 3594.826463094143 2020 4150.783939990517 2021 4316.494387424175