Year current US$ 1995 1296000000 1996 1675000000 1997 1446000000 1998 1744000000 1999 1949000000 2000 2039000000 2001 2583000000 2002 2646000000 2003 3221000000 2004 3922000000 2005 4610000000 2006 5984000000 2007 7181000000 2008 7221000000 2009 6626000000 2010 6702000000 2011 7321000000 2012 6697000000 2013 6851000000 2014 7384000000 2015 6260000000 2016 6557000000 2017 7494000000 2018 7774000000 2019 8187000000 2020 3848000000