| Date | Description | Base Date $m | Current $m | Contractor | Notes | |
| Aug 07 | Original Approved | 2,745.3 | 2,745.3 | |||
| Jan 09 Jan 09 | Real Variation - Scope Real Variation - Transfers | (14.8) | (14.8) | 1 | ||
| 4.5 | 4.5 | 2 | ||||
| (10.3) | (10.3) | |||||
| Jun 10 Jun 10
| Price Indexation Exchange Variation
| 313.2 (169.0) | ||||
| Jun 10 | Total Budget | 2,735.0 | 2,879.2 | |||