Year current international $ 1990 8954.94515026785 1991 9387.464913293941 1992 10242.988675786017 1993 11019.566023946385 1994 10691.7724796686 1995 10808.810019711927 1996 11930.798890730039 1997 13457.576821467826 1998 13674.548105781936 1999 13852.879497089429 2000 14637.959070936102 2001 14614.832992051479 2002 14569.6256457404 2003 14141.723004553965 2004 14160.407168778147 2005 15846.051402771996 2006 17503.196497767356 2007 19473.420675120542 2008 18880.574855940704 2009 18453.44107312045 2010 18981.658650159305 2011 21780.707557605696 2012 22263.822159947045 2013 22487.249774700045 2014 24984.52691542602 2015 25435.22898943618 2016 28811.397033495814 2017 30674.648733544203 2018 32091.298865734596 2019 34219.06137011796 2020 31055.944205503947 2021 29979.827268609057 2022 30550.32480163586 2023 32693.64026228779