Year current US$ 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 1202954.73916494 2005 2652285.07919575 2006 3059490.70899524 2007 5647371.26758628 2008 14919848.1804647 2009 10294915.3980775 2010 11670604.3249402 2011 19902176.6764464 2012 30239895.2565135 2013 21275753.4925084 2014 22065894.5278309 2015 7427601.34804505 2016 4175839.77574676 2017 8654232.30748762 2018 21507645.9872604 2019 15873846.1299621 2020 8377101.47151267 2021 19994129.8983335