Africa's exports to the U.S. have increased how much since 2002?

Africa's exports to the U.S. have increased how much since 2002? http://fpolicy.america.govfpolicy/aid/index/faq/africas-exports-to-the-u.s.-have-increased-how-much-since-2002.rss A. Sixfold http://fpolicy.america.gov http://fpolicy.america.gov Wed, 29 Oct 2008 13:18:29 -0400 B. 50 percent http://fpolicy.america.gov http://fpolicy.america.gov Wed, 29 Oct 2008 13:17:20 -0400 C. 30 percent http://fpolicy.america.gov http://fpolicy.america.gov Wed, 29 Oct 2008 13:16:50 -0400 D. Barely any http://fpolicy.america.gov http://fpolicy.america.gov Wed, 29 Oct 2008 13:15:27 -0400