Year current international $ 1990 8460.747891961657 1991 8669.791061357137 1992 9235.958652352783 1993 10037.842609667578 1994 9525.435875540259 1995 10249.163561649062 1996 10969.122748660908 1997 11785.239427493942 1998 8969.162706166686 1999 8649.614773427173 2000 9498.96441384638 2001 9157.475602925766 2002 9281.087739026074 2003 9587.597003882716 2004 10854.688847366477 2005 11863.855629574746 2006 13581.519870227346 2007 14866.427709518932 2008 16038.295621262232 2009 15442.117315234773 2010 17343.67712989983 2011 19590.951038725365 2012 20627.492060602235 2013 22373.246558374383 2014 24105.023797809845 2015 25855.765355827458 2016 26695.915689876027 2017 28193.174485199717 2018 28299.398872168185 2019 28461.17903159189 2020 28680.20094132356 2021 31637.530544461628 2022 38355.153967209604 2023 44151.02489318689