| Period | Index | Previous Year | Previous Month |
|---|---|---|---|
| April, 2010 | 88.1 | 1.3% | 0.0% |
| March, 2010 | 88.1 | 1.3% | 0.6% |
| February, 2010 | 87.6 | 0.6% | 0.3% |
| January, 2010 | 87.3 | 0.8% | -0.6% |
| December, 2009 | 87.8 | 0.9% | 0.8% |
| November, 2009 | 87.1 | 0.3% | -0.1% |
| October, 2009 | 87.2 | 0.0% | 0.1% |
| September, 2009 | 87.1 | -0.3% | -0.5% |
| August, 2009 | 87.5 | 0.1% | 0.2% |
| July, 2009 | 87.3 | -0.5% | 0.0% |