| average decrease greater than 20% |
| average decrease of 10% to 20% |
| average decrease of 5% to 10% |
| average decrease of 1% to 5% |
| no change (plus or minus 1%) |
| average increase of 1% to 5% |
| average increase of 5% to 10% |
| average increase of 10% to 20% |
| average increase of more than 20% |
| No Data |