Year constant 2021 US$ 1991 360000.01430511504 1992 23450000.762939498 1993 172100006.10351598 1994 279399993.89648396 1995 291709991.455078 1996 432429992.675781 1997 358119995.11718804 1998 312480010.986328 1999 365869995.11718804 2000 266920013.427734 2001 462369995.11718804 2002 479739990.234375 2003 315209991.455078 2004 402130004.88281304 2005 364470001.220703 2006 429910003.66210896 2007 350089996.33789104 2008 798609985.351563 2009 708270019.53125 2010 654030029.296875 2011 569260009.765625 2012 694669982.910156 2013 667880004.882813 2014 581940002.441406 2015 512450012.207031 2016 527619995.117188 2017 498959991.455078 2018 626739990.234375 2019 539630004.882813 2020 1105339965.82031 2021 769179992.675781 2022 400000000