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Mr. Christie has served on the Company�s board of directors since 1992. He is an independent consultant and has served on the boards of directors of Ducommun, Incorporated since 1985, Southwest Water Co. since 1995 and Valero L.P. from 2002 until July 2005. Beginning in 1972, he has served as a director or trustee of the following mutual funds operated by Capital Research and Management Company: American Mutual Fund, AMCAP Fund, U.S. Government Securities Fund, American High Income Trust, American High Income Municipal Bond Fund, American Variable Insurance Series, The Bond Fund of America, Capital Income Builder, Capital World Bond Fund, Capital World Growth and Income Fund, Cash Management Trust of America, Intermediate Bond Fund of America, Limited Term Tax Exempt Bond Fund of America, The New Economy Fund, SMALL CAP World Fund, The Tax Exempt Bond Fund of America, The Tax Exempt Fund of California, The Tax Exempt Money Fund of America, and The U.S. Treasury Money Fund of America. | 