Year current international $ 1990 20229.755868162505 1991 20224.687331105637 1992 20626.20205858985 1993 21440.046985599052 1994 22632.834086308052 1995 23485.64192803954 1996 24050.175006217352 1997 25258.86056049478 1998 26319.674163510448 1999 27841.353349657475 2000 29362.084160978553 2001 30230.848768576154 2002 30963.921885668424 2003 32351.545696869758 2004 33927.66969525323 2005 36328.378994377046 2006 38119.390959354525 2007 39575.47700758761 2008 40376.0882836384 2009 38864.056695853826 2010 40098.253719113934 2011 41666.83745902785 2012 42291.972935709426 2013 44301.05625291326 2014 45758.10072973044 2015 44668.09128143034 2016 46470.64663911111 2017 48317.387445716515 2018 49982.5999118348 2019 50498.97310574482 2020 48590.6832121939 2021 55781.699027291164 2022 62041.56202984064 2023 61582.34997132649