Year current international $ 1990 8693.600620338779 1991 9196.447190661775 1992 9587.17964358292 1993 9145.724920171833 1994 9567.52694088882 1995 9021.741361518641 1996 9585.912152159755 1997 10274.09270456837 1998 10847.92218567404 1999 11119.93564423517 2000 11794.323603734183 2001 11821.965971038984 2002 11835.492933332664 2003 12130.852733408194 2004 12712.40873246018 2005 13306.656394287418 2006 14591.584161509452 2007 15097.287903915258 2008 15779.190368171194 2009 15322.63332397251 2010 16063.166329624359 2011 17432.147506555924 2012 18170.024643642588 2013 18333.374378885313 2014 18983.77899197405 2015 19217.858793815223 2016 20225.71024130244 2017 20582.252367025907 2018 21015.92575394307 2019 21095.713696736504 2020 19473.08849068737 2021 21131.915758253912 2022 23859.12564288722 2023 25601.625547109714