That chart only goes up to 2002, and shows that we're getting at least twice as much oil from outside the Persian Gulf, as we do from the Mid-East. I'm not entirely sure how to read it.... but from the same site....
Crude Oil Imports from the Persian Gulf (2002E): 2.25 million bbl/d
(around 20% of total U.S. oil imports)
Top Sources of U.S. Crude Oil Imports (2002E): Saudi Arabia (1.52 million bbl/d); Mexico (1.49 million bbl/d); Canada (1.43 million bbl/d); Venezuela (1.20 million bbl/d)
http://www.geni.org/globalenergy/lib...es-of-america/
(No wonder you never link your sources)