Year current international $ 2000 1545.44270184607 2001 1615.39486356105 2002 1747.29054378387 2003 1823.15650599395 2004 1971.88123046638 2005 2042.23253563718 2006 2167.20195415171 2007 2330.31092625523 2008 2394.3935373574 2009 2603.48783436064 2010 2610.15936165934 2011 2777.44506553933 2012 2712.26806507647 2013 2832.73210786937 2014 3283.22607292801 2015 3414.96507739038 2016 3597.30253189061 2017 3658.05997652607 2018 3810.54932596923 2019 3975.15899228888 2020 4387.8312970674 2021 4933.6407573737