Year current international $ 2000 54.2075769239514 2001 99.5604342441773 2002 352.298193601085 2003 329.599444639667 2004 315.169026305664 2005 251.88492691223 2006 243.391022601902 2007 268.602467327214 2008 256.703516011051 2009 346.342303469858 2010 309.390656228215 2011 282.912879793711 2012 307.600893288577 2013 358.648833539579 2014 372.343660203652 2015 364.99417857244 2016 378.07293664005 2017 410.824011548768 2018 391.952807222114 2019 422.14802395389 2020 478.643269994998 2021 436.050747215001