Year current international $ 1990 13302.572555969069 1991 14009.591198472612 1992 14319.34139439999 1993 14339.625391310941 1994 14864.14664123461 1995 15422.258253382899 1996 16144.267053576832 1997 17152.762665087354 1998 18033.68463469745 1999 18464.732075472504 2000 19518.674309867845 2001 20960.988801197953 2002 22615.935607463525 2003 23897.931267500466 2004 25461.185944777597 2005 25577.52410523464 2006 28548.986827257242 2007 29326.919661378626 2008 30856.011839598665 2009 30358.244444050757 2010 27908.29592394531 2011 25671.516085356237 2012 24911.119631323963 2013 25986.650315501352 2014 26625.06180967987 2015 26760.363303025646 2016 27511.801016097237 2017 28604.860940265713 2018 29617.54833997322 2019 31611.211442814063 2020 29088.208057775668 2021 33018.25441528658 2022 38922.47422529724 2023 41186.81220278937