| UPGRADES & DOWNGRADES HISTORY |
| Date | Research Firm | Action | From | To | | 26-Nov-07 | Punk, Ziegel & Co | Upgrade | Mkt Perform | Accumulate | | 11-May-06 | Punk, Ziegel & Co | Downgrade | Buy | Mkt Perform | | 5-Oct-05 | CIBC Wrld Mkts | Upgrade | Sector Perform | Sector Outperform | | 9-Aug-04 | Punk, Ziegel & Co | Upgrade | Mkt Perform | Buy | | 26-Jan-04 | Punk, Ziegel & Co | Downgrade | Buy | Mkt Perform | | 6-Jan-04 | CIBC Wrld Mkts | Initiated | | Sector Perform | | 2-Dec-02 | Investec | Initiated | | Buy | | 16-Nov-01 | UBS Warburg | Initiated | | Buy | | 4-Jan-00 | Prudential | Downgrade | Accumulate | Hold | | 27-Jul-99 | Prudential | Initiated | | Accumulate |
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| Current Month | Last Month | Two Months Ago | Three Months Ago | | Strong Buy | | | | | | Buy | | | | | | Hold | | | | | | Underperform | | | | | | Sell | | | | |
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