Year current international $ 1990 14871.455103405622 1991 14560.450054341396 1992 14937.454313669175 1993 15964.25624428352 1994 17111.15052089855 1995 17885.353705654234 1996 18441.634545980112 1997 19127.300412607434 1998 19319.98356457647 1999 20579.365916514038 2000 21500.62928980995 2001 22521.04093824918 2002 23306.279537627735 2003 23987.368894492352 2004 25096.68587784854 2005 25677.419080325202 2006 27744.06171983263 2007 29353.500628372287 2008 29827.14254753851 2009 30682.953875723506 2010 31214.051092545073 2011 32702.1461450023 2012 32989.36815696209 2013 36243.243972771634 2014 37297.813484897764 2015 37488.04963596132 2016 39946.23443085632 2017 42206.923421303974 2018 42499.37792608363 2019 45163.6964269884 2020 45283.46804962172 2021 48194.04105997585 2022 52327.699124600666 2023 54109.80099726839