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| Percentage change, year on year (1Q06 - 1Q07) | ||
| Trend | Direction | |
| Building cost index | 5.7 | %3E |
| Mechanical cost index | 4.3 | Down |
| Electrical cost index | 5.4 | Down |
| Consumer prices index | 2.9 | Up |
| (1Q07 figures provisional) | ||
| The chart shows how the indices for different sectors have fared over the past seven year. | ||
| Price adjustment formulae for construction % change | |
| Cladding and covering: lead | +15.3 |
| Concrete: reinforcement | +10.1 |
| Piling: steel | +9.7 |
| Waterproofing: asphalt | +8.2 |
| Fencing | +8.2 |
| Pavings: coated macadam and asphalt | +7.6 |
| Metal: miscellaneous | +7.3 |
| Windows and doors: softwood | +7.1 |
| Pipes and accessories: copper | –13.1 |
| Cladding and covering: copper | –12.9 |
| Windows and doors: aluminium | –7.2 |