Year current international $ 2000 79.85314278158431 2001 86.92469115030687 2002 90.09717384785162 2003 90.89907081790506 2004 98.20530085032435 2005 104.5996890415625 2006 111.27027291494855 2007 118.52934593929044 2008 122.39463144814782 2009 128.44299766272005 2010 131.10085854854015 2011 133.84855878357206 2012 147.4412144885417 2013 170.5869266808379 2014 172.57418507924868 2015 179.802350682333 2016 187.87234090555415 2017 173.3270981968417 2018 183.57799327767924 2019 197.86023844674216 2020 208.0047419154722 2021 227.80220759874376