Year current international $ 1990 6177.902025449267 1991 6461.904714285586 1992 6646.6679281932165 1993 6833.757417991671 1994 7226.759179523232 1995 7311.811493520615 1996 7593.9848486230885 1997 7995.307973648517 1998 8171.551646900929 1999 8197.4545724459 2000 8568.975436196035 2001 8664.031856577845 2002 8749.122214586281 2003 9029.578408814215 2004 9631.558810394974 2005 10210.647847784172 2006 11019.300920747322 2007 11777.147180698796 2008 12414.259701510571 2009 12209.337066926068 2010 13038.01254904483 2011 13898.542733923872 2012 14168.66720378487 2013 14625.530584196686 2014 14920.029916202977 2015 14678.033673608017 2016 14894.641682555477 2017 15491.255846962451 2018 16144.224662103892 2019 16501.52151572245 2020 15850.202041624947 2021 17792.028166266588 2022 19860.833234426038 2023 20898.841654487474