Year current international $ 2000 151.2812650110371 2001 159.82839653291887 2002 167.06998623885417 2003 166.50760532758093 2004 169.49696405058975 2005 170.52811356493504 2006 177.61910244124905 2007 190.12677512214367 2008 194.79123277721007 2009 211.1224865474501 2010 209.80079900882836 2011 206.95163490667863 2012 233.0750307045476 2013 252.58298899386577 2014 245.67457592665366 2015 264.77220298307225 2016 276.3983491057949 2017 278.86453437320677 2018 274.75274396283834 2019 268.94520481723146 2020 258.783550358985 2021 260.24271208192175