Cameroon
-$826 million (2010 est.)
-$1.137 billion (2009 est.)

Canada
-$40.21 billion (2010 est.)
-$38.08 billion (2009 est.)

Cape Verde
-$286 million (2010 est.)
-$319 million (2009 est.)

Central African Republic
-$77 million (2007 est.)

Chad
-$2.6 billion (2010 est.)
-$2.305 billion (2009 est.)

Chile
$1.033 billion (2010 est.)
$4.217 billion (2009 est.)

China
$272.5 billion (2010 est.)
$297.1 billion (2009 est.)

Colombia
-$5.946 billion (2010 est.)
-$4.991 billion (2009 est.)

Comoros
$8 million (2007 est.)

Congo, Democratic Republic of the
-$1.47 billion (2007 est.)
-$402 million (2007 est.)