Year constant 2021 international $ 1990 8236.324315949661 1991 8552.519810253383 1992 8698.449482755575 1993 8812.232555117498 1994 9056.982499933207 1995 9129.1089323606 1996 9083.668329147735 1997 9353.251235355856 1998 9441.529946140305 1999 8581.444230361652 2000 8323.214277751733 2001 8886.140669506969 2002 9274.7408361358 2003 9365.832199767197 2004 9819.926380244366 2005 10230.048752354895 2006 10529.69535266883 2007 10539.343212212325 2008 11221.62491610331 2009 11199.377926945677 2010 11527.805586785913 2011 12289.460558601588 2012 12818.23312959706 2013 13540.75405809466 2014 13890.612351263442 2015 13673.711359154657 2016 13395.75636501442 2017 13899.597861250491 2018 13722.368203448796 2019 13459.631706597638 2020 11975.104950009512 2021 13242.997294749928 2022 13896.854407888146 2023 13986.39698320901