Year current international $ 1990 19449.760222389817 1991 20981.206455282558 1992 21706.35396099414 1993 21859.63444642635 1994 22781.300571717464 1995 23548.834125124304 1996 24070.119235208273 1997 24568.14289087355 1998 25344.881318529307 1999 26291.21107938978 2000 27202.476084856702 2001 28376.90408651115 2002 29178.63746581222 2003 29909.808720644858 2004 31334.731516716012 2005 31794.096009520737 2006 34160.10311155694 2007 36295.71843178913 2008 37802.387430319686 2009 36814.75473391458 2010 38945.92173486038 2011 42541.531088409574 2012 43359.61482717231 2013 44993.89274593153 2014 47011.55109351308 2015 47609.78100458156 2016 50579.68392992657 2017 53071.455569991325 2018 55195.8405428372 2019 58251.773082846936 2020 57905.17955148442 2021 61939.65158501369 2022 66616.02224505595 2023 69338.29322644667