Year current international $ 2000 128.55676010646 2001 128.902457757034 2002 123.300889072134 2003 113.071343198563 2004 110.404685256989 2005 103.980121620113 2006 97.5665427551343 2007 89.3972475119447 2008 88.6052054488053 2009 89.5347446747275 2010 91.1031245148301 2011 85.3253381573114 2012 83.0661278799367 2013 80.2410248402589 2014 81.2434763908498 2015 62.8046273567962 2016 62.3704962372979 2017 61.576997258415 2018 62.0952104202359 2019 65.4903318567884 2020 64.0435718291841 2021 60.7698056176302