Year current international $ 2000 297.2146624630758 2001 316.27560000604814 2002 318.9686469581278 2003 328.0514214198616 2004 344.77694916286214 2005 375.6920877616422 2006 400.2651093188555 2007 428.8592252383634 2008 439.78520818370936 2009 448.8691864213772 2010 448.89289314395677 2011 461.24091874668323 2012 475.8484710539491 2013 491.7450245849446 2014 508.5203858844305 2015 522.4883498011159 2016 529.1609383600876 2017 566.9038010466977 2018 596.7898921238228 2019 611.2984835925823 2020 586.2640271596874 2021 625.9568375223082