Year current international $ 1990 2402.3296272934294 1991 2566.1196062577974 1992 2707.7635908910875 1993 2929.7739184329535 1994 3127.244148198252 1995 3337.6911499151693 1996 3500.0429114231893 1997 3762.4568189376205 1998 3959.53703705024 1999 4163.670464031833 2000 4487.995604691396 2001 4483.7677285094005 2002 4686.8020538070605 2003 5012.753769834641 2004 5375.691388115911 2005 5835.381538967697 2006 6412.451097235909 2007 6960.984813069757 2008 7440.563936270326 2009 7676.905069511237 2010 8317.495186929062 2011 9140.504317252182 2012 10323.442648567483 2013 10961.484327501568 2014 11465.95138122824 2015 12017.032722426517 2016 12946.408135511589 2017 13576.4170421781 2018 14178.022536552897 2019 14112.952504615236 2020 12940.904505772172 2021 14316.136492546486 2022 14182.308178189356 2023 14455.301616803885