Year current international $ 1990 8027.7890625 1991 7857.85498046875 1992 6862.41455078125 1993 6419.53662109375 1994 5734.421875 1995 5613.28076171875 1996 5517.85888671875 1997 5699.94775390625 1998 5465.05615234375 1999 5914.326171875 2000 6825.3916015625 2001 7361.36376953125 2002 8037.474609375 2003 9254.537109375 2004 10226.7666015625 2005 11822.3466796875 2006 14912.234375 2007 16648.2421875 2008 20163.609375 2009 19389.94140625 2010 20490.126953125 2011 22789.54296875 2012 24273.517578125 2013 26019.7265625 2014 25688.2265625 2015 23994.013671875 2016 24012.40234375 2017 25777.904296875 2018 28628.5625 2019 30963.853515625 2020 31490.8046875 2021 38938.49609375 2022 40957.76953125 2023 44103.546875