See Management’s Discussion and Analysis of Financial Condition and Results of Operations for a discussion of factors that will enhance an understanding of this data. The financial data for 2007 includes the impact of a $4,588 million before-tax ($4,512 million after-tax) non-cash impairment related to the expropriation of our oil interests in Venezuela. For additional information, see the “Expropriated Assets” section of Note 13 — Impairments, in the Notes to Consolidated Financial Statements. Additionally, the acquisition of Burlington Resources in 2006 affects the comparability of the amounts included in the table above. See Note 5 — Acquisition of Burlington Resources Inc., in the Notes to Consolidated Financial Statements, for additional information. See Note 2 — Changes in Accounting Principles, in the Notes to Consolidated Financial Statements, for information on changes in accounting principles affecting the comparability of the amounts included in the table above.