Year current US$ 1980 0 1981 0 1982 0 1983 0 1984 0 1985 0 1986 0 1987 0 1988 0 1989 0 1990 0 1991 0 1992 0 1993 0 1994 0 1995 0 1996 0 1997 0 1998 0 1999 0 2000 0 2001 0 2002 0 2003 0 2004 0 2005 21435.1723654547 2006 29596746.4767273 2007 43286387.3633085 2008 72371331.7582896 2009 46959406.8139659 2010 62217795.841784 2011 91542034.9597504 2012 62165886.8071568 2013 41972463.4670835 2014 29955286.1380353 2015 8968351.88471805 2016 5682779.1377994 2017 6368833.46554342 2018 7971528.8916191 2019 5294267.2309704 2020 1595865.18985809 2021 3736813.40993083