| Year | Period | Previous estimate | Revised estimate |
|---|---|---|---|
| 2005 | 1 | 0.2 | 0.3 |
| 2005 | 2 | 0.7 | 0.7 |
| 2005 | 3 | 1.0 | 1.0 |
| 2005 | 4 | 1.1 | 1.0 |
| 2006 | 1 | 1.0 | 1.0 |
| 2006 | 2 | 0.4 | 0.3 |
| 2006 | 3 | 0.3 | 0.1 |
| 2006 | 4 | 0.5 | 0.5 |
| 2007 | 1 | 1.0 | 0.9 |
| 2007 | 2 | 1.0 | 1.0 |
| 2007 | 3 | 0.6 | 0.5 |
| 2007 | 4 | 0.2 | 0.3 |
| 2008 | 1 | -0.2 | -0.2 |
| 2008 | 2 | 0.1 | 0.1 |
| 2008 | 3 | 0.2 | 0.1 |
| 2008 | 4 | -0.8 | -0.9 |