Year current international $ 1990 16819.93992796644 1991 17430.811785085494 1992 17933.488772915436 1993 18402.079451255016 1994 19178.431790433107 1995 19995.48713176188 1996 20844.339050560568 1997 21777.692946704636 1998 22476.11202866883 1999 23424.19091181999 2000 24993.869128690454 2001 25896.033151065356 2002 26823.14099485039 2003 27890.701301219047 2004 29558.689844238637 2005 31162.105862067874 2006 33490.77651420392 2007 35294.58127849893 2008 36599.917613139514 2009 35591.58288401716 2010 37007.69401726238 2011 38744.904974161764 2012 39915.262533257395 2013 41326.654004489385 2014 42363.06031945774 2015 42890.000889418654 2016 44081.31083755669 2017 45994.382032393296 2018 48196.537009847285 2019 50504.625273758844 2020 49474.55333327966 2021 55103.06244866747 2022 60235.352817820734 2023 63340.40551352896