Year current US$ 1995 313000000 1996 282000000 1997 289000000 1998 230000000 1999 221000000 2000 212000000 2001 184000000 2002 206000000 2003 204000000 2004 291000000 2005 318000000 2006 366000000 2007 443000000 2008 596000000 2009 561000000 2010 805000000 2011 926000000 2012 1062000000 2013 1028000000 2014 1143000000 2015 903000000 2016 899000000 2017 910000000 2018 972000000 2019 979000000 2020 336000000