Year constant 2021 international $ 1990 30554.248163935776 1991 29765.464282003668 1992 29602.9968085132 1993 30461.598363509118 1994 31222.559968766567 1995 32067.460988253486 1996 33071.992659595024 1997 34262.21065828863 1998 35542.7071943772 1999 36591.17070746456 2000 37976.607067411285 2001 38416.242439478185 2002 39652.27923990201 2003 40488.25478045293 2004 42308.52193789084 2005 43428.91664864407 2006 44800.987698405006 2007 46023.91300541346 2008 47441.4853501948 2009 48331.8367872058 2010 48044.946027239486 2011 50384.49487395102 2012 52028.95123334903 2013 51662.8327883392 2014 51752.21355792487 2015 51244.17781044348 2016 50602.68699646399 2017 52180.364164318205 2018 52892.50440320401 2019 53812.51605996651 2020 53837.41334022715 2021 56782.458137434776 2022 58256.35499654365 2023 58276.876433943