Year constant 2021 international $ 1990 38305.26492707874 1991 38941.06628186428 1992 39140.40018004957 1993 38663.87573255841 1994 39479.10292283364 1995 40353.58483044446 1996 40958.71521178121 1997 41988.31512511617 1998 43172.664306358485 1999 44317.00991078241 2000 45885.652404315064 2001 46758.77281982807 2002 47005.402840085975 2003 47121.73228441966 2004 47956.180756573216 2005 48539.05833432195 2006 49897.2460666603 2007 51153.30885039341 2008 51128.329391265404 2009 48629.70319074259 2010 49529.31202816694 2011 50433.762479769284 2012 49856.692661993526 2013 49561.423297819645 2014 50073.880145831245 2015 50938.50035222193 2016 51749.63740234309 2017 52998.363643656354 2018 53827.41154137853 2019 54629.19358475417 2020 51138.7007304256 2021 54208.130084563716 2022 55864.64525511999 2023 55834.677786318054