Year current international $ 1990 17030.45312285223 1991 17902.915438719676 1992 18408.443063218383 1993 18617.696632090392 1994 19418.189891313217 1995 20258.139081460224 1996 20896.3708925449 1997 21737.956405666493 1998 22777.81753561014 1999 23646.372804691044 2000 25115.637395208058 2001 26305.672617312368 2002 27343.7487331103 2003 27797.954167687436 2004 28892.164805027896 2005 29887.831749836296 2006 32342.274214990637 2007 34236.42828949791 2008 35526.6098679105 2009 34606.59066179179 2010 35569.57485560597 2011 37220.31804369059 2012 37593.318953072 2013 38776.9233467881 2014 39736.26317862902 2015 40826.32672282186 2016 43313.46575448454 2017 45399.56802246314 2018 47320.160232427246 2019 50853.42021122555 2020 49285.50497003803 2021 54208.1300845637 2022 59534.2072802853 2023 62585.838773724885