+----------------+---------------------+
| rating_firm_id | date                |
+----------------+---------------------+
|              1 | 2006-11-15 13:56:09 |
|              1 | 2006-11-15 13:52:25 |
|              6 | 2006-11-15 13:50:33 |
|              4 | 2006-11-15 13:45:37 |
|              4 | 2006-11-15 13:45:30 |
|              2 | 2006-11-15 13:44:51 |
|              2 | 2006-11-15 13:44:46 |
|              2 | 2006-11-15 13:44:39 |
|              1 | 2006-11-13 16:36:58 |
|              1 | 2006-10-27 00:00:00 |
|              1 | 2006-10-26 00:00:00 |
|              1 | 2006-10-22 00:00:00 |
|              1 | 2006-10-19 00:00:00 |