Year current international $ 1990 13409.936926312537 1991 14082.925463377882 1992 14964.354405081313 1993 15896.117372246605 1994 16758.75012815976 1995 17723.982832504862 1996 18260.04989507602 1997 19301.203540649585 1998 20479.563797960192 1999 21779.45007677512 2000 22938.030234015743 2001 24881.97737976941 2002 25467.360712570877 2003 25967.781474671923 2004 28993.073514585212 2005 29350.30605008169 2006 29955.58126787631 2007 30587.999037909216 2008 30782.453939995907 2009 30533.680896723665 2010 30933.216571618763 2011 31824.154838385468 2012 32312.007208711748 2013 32623.927850542867 2014 32850.54176042036 2015 32899.94215495182 2016 32944.023590998826 2017 32686.46158935291 2018 34733.99555298731 2019 37453.78841382304 2020 36858.97917940275 2021 40559.69857498754 2022 45559.20454281516 2023 47699.561539833434