| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [prep] an [adj] rate | 29 |
|
| 2 | [vb past] at an [adj] rate | 23 |
|
| 3 | [vb past] [prep] an annual rate | 18 |
|
| 4 | [vb past] [prep] an annual rate | 18 |
|
| 5 | grew [prep] an [adj] rate | 7 |
|
| 6 | fell [prep] an [adj] rate | 6 |
|
| 7 | rose [prep] an [adj] rate | 6 |
|
