Exhibit 99.1
The table below specifies the date, amount and weighted average price per ADS and/or Series L Share purchased by Cascade Investment, L.L.C. (“Cascade”) during the period March 14 - 18, 2011. Cascade undertakes to provide upon request by the staff of the Securities and Exchange Commission full information regarding the number of ADSs and Series L Shares purchased at each separate price. All transactions were effected in the open market on the New York Stock Exchange, the Mexican Stock Exchange or through Electronic Communication Networks.
Date of Purchase | Number of | Weighted Average Price | Range of Price Paid (US $) |
3/14/2011 | 51,598 | 75.5495 | 75.47 - 75.5650 |
3/14/2011 | 22,900 | 7.6003 | 7.5616 - 7.6272 |
3/15/2011 | 2,033 | 74.682 | 74.48 - 75.25 |
3/16/2011 | 46,000 | 75.2804 | 74.80 - 75.60 |
3/16/2011 | 19,650 | 7.4828 | 7.4515 - 7.4943 |
3/17/2011 | 25,000 | 75.5623 | 75.235 - 75.70 |
3/18/2011 | 37,500 | 75.8572 | 75.61 - 76.00 |
3/18/2011 | 25,000 | 7.5857 | 7.5600 - 7.6115 |
