Hydrocarbon Reserves

Annual Reports and Presentations

	Report	Presentation	Conference Call
As of January 1, 2012*
As of January 1, 2011*			Conference Call (March 30, 2011)
As of January 1, 2010*			Conference Call (March 19, 2010)
As of January 1, 2009*			Conference Call (March 20, 2009)
As of December 31, 2007			Conference Call (March 26, 2008)
As of December 31, 2006			Conference Call (March 26, 2007)
As of December 31, 2005			Conference Call (March 16, 2006)
As of December 31, 2004

* Previosly reported as of December 31 of each year.

Anual Evaluations

Hydrocarbon Reserves of Mexico Evaluation as of January 1, 2012 (Full Version) Documents and explains the values of Mexico's volumes and reserves, as reported in the proved, probable and possible categories, their value in oil equivalent, the period's production associated with the fields and the cumulative production to date. Cover and contents Preface Introduction Basic definitions Estimation of hydrocarbon reserves as of January 1, 2012 Discoveries Distribution of hydrocarbon reserves Abbreviations Glossary Statistical appendix

Hydrocarbon Reserves of Mexico Evaluation as of January 1, 2011 (Full Version) Cover and contents Introduction Basic definitions Estimation of hydrocarbon reserves as of January 1, 2011 Discoveries Distribution of hydrocarbon reserves Abbreviations Glossary Statistical appendix

Hydrocarbon Reserves of Mexico Evaluation as of January 1, 2010 (Full Version) Cover and contents Preface Introduction Basic definitions Prospective resources as of January 1, 2010 Estimation of hydrocarbon reserves as of January 1, 2010 Discoveries Distribution of hydrocarbon reserves Abbreviations Glossary Statistical appendix

Hydrocarbon Reserves of Mexico Evaluation as of January 1, 2009 (Full Version) Cover and contents Preface Introduction Basic definitions Prospective resources as of January 1, 2009 Estimation of hydrocarbon reserves as of January 1, 2009 Discoveries Distribution of hydrocarbon reserves Abbreviations Glossary Statistical appendix

Hydrocarbon Reserves of Mexico Evaluation as of January 1, 2008 (Full Version) Cover and contents Preface Introduction Basic definitions Prospective resources as of January 1, 2008 Estimation of hydrocarbon reserves as of January 1, 2008 Discoveries Distribution of hydrocarbon reserves Evolution of hydrocarbon reserves 1998-2008 Abbreviations Glossary Statistical appendix

Hydrocarbon Reserves of Mexico Evaluation as of January 1, 2007 (Full Version) Cover and contents Preface Introduction Basic definitions Estimation of hydrocarbon reserves as of January 1, 2007 Discoveries Distribution of hydrocarbon reserves Abbreviations Glossary Statistical appendix

Hydrocarbon Reserves of Mexico Evaluation as of January 1, 2006 (Full Version) Cover and contents Preface Introduction Basic definitions Estimation of hydrocarbon reserves as of January 1, 2006 Discoveries Distribution of hydrocarbon reserves Abbreviations Glossary Statistical appendix

Hydrocarbon Reserves of Mexico Evaluation as of January 1, 2005 (Full Version) Cover and contents Preface Introduction Basic definitions Estimation of hydrocarbon reserves as of January 1, 2005 Discoveries Distribution of hydrocarbon reserves Abbreviations Glossary Statistical appendix

Hydrocarbon Reserves of Mexico Evaluation as of January 1, 2004 (Full Version) Cover and contents Preface Introduction Basic definitions Estimation of hydrocarbon reserves as of January 1, 2004 Discoveries Distribution of hydrocarbon reserves Abbreviations Glossary Statistical appendix