Year current US$ 1995 1141000000 1996 1551000000 1997 2347000000 1998 1431000000 1999 2652000000 2000 2334000000 2001 2011000000 2002 2018000000 2003 1821000000 2004 2390000000 2005 2863000000 2006 4051000000 2007 5523000000 2008 3293000000 2009 2916000000 2010 3441000000 2011 4053000000 2012 4963000000 2013 5599000000 2014 6059000000 2015 6414000000 2016 6289000000 2017 8349000000 2018 9715000000 2019 11455000000 2020 2769000000