Year current international $ 1990 5835.580913097378 1991 4726.622310259293 1992 2643.178361899758 1993 1898.3711962313873 1994 1764.2446989081698 1995 1918.7698859055085 1996 2253.0952334378353 1997 2615.6462106582917 1998 2795.394477113032 1999 2976.8579732772987 2000 3161.1958249061036 2001 3440.7281791703376 2002 3718.6869325479984 2003 4239.938413691823 2004 4634.777576002954 2005 5271.95095255549 2006 5980.443904743042 2007 6951.085842555758 2008 7278.66312182282 2009 7119.142790852838 2010 7711.8068388196925 2011 8563.83554915647 2012 10059.98206039542 2013 10797.34232734757 2014 11770.69893602531 2015 12269.652893276785 2016 13065.294157467975 2017 13718.937866976376 2018 15021.905757743301 2019 16770.1333771469 2020 16791.259865446496 2021 18915.653400526273 2022 22442.78671775736 2023 24681.25059514155