| 
                         Approved without change  | 
                        Revision of a currently approved collection | 1981-11-09 | |
| 
                         Approved with change  | 
                        No material or nonsubstantive change to a currently approved collection | 1981-07-31 | |
| 
                         Approved without change  | 
                        Reinstatement with change of a previously approved collection | 1981-03-21 |