| Date | Description | Base Date $m | Current $m | Contractor | Notes | |
| Sep 05 | Original Approved | 248.8 | 248.8 | |||
| Mar 06 | Real Variation - Transfers | 155.4 | 155.4 | 1 | ||
| May 06 | Real Variation - Transfers | (6.7) | (6.7) | 2 | ||
| 148.7 | 148.7 | |||||
| Jun 10 | Price Indexation | 710.0 | ||||
| Jun 10 | Exchange Variation | (10.0) | ||||
| Jun 10 | Total Budget | 397.5 | 458.5 | |||
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