In 1976, Mexico discovered one of the world’s truly great oilfields, Cantarell, in the Bay of Campeche west of Yucatan. The discoveries vaulted Mexico to No. 1 among all suppliers of oil to the U.S. during 1982-86. Mexico has been among the top three suppliers ever since, averaging about 1.5 million b/d since 2000 and 1.8 million b/d in the first half of 2006. Cantarell’s phenomenal production made this possible. The figure below shows Mexico’s oil production since 1965 and the dominance of these discoveries.