| Period | Index | Previous Year | Previous Month |
|---|---|---|---|
| August, 1998 | 74.2 | 0.5% | -0.3% |
| July, 1998 | 74.4 | 0.8% | 0.4% |
| June, 1998 | 74.1 | 1.4% | 0.1% |
| May, 1998 | 74.0 | 1.2% | 0.1% |
| April, 1998 | 73.9 | 1.4% | 0.1% |
| March, 1998 | 73.8 | 1.1% | -0.1% |
| February, 1998 | 73.9 | 1.2% | 0.1% |
| January, 1998 | 73.8 | 1.2% | 0.0% |
| December, 1997 | 73.8 | 2.1% | 0.3% |
| November, 1997 | 73.6 | 2.2% | 0.0% |