| 
                         Approved without change  | 
                        Reinstatement with change of a previously approved collection | 1994-11-02 | |
| 
                         Approved without change  | 
                        Extension without change of a currently approved collection | 1991-05-13 | |
| 
                         Approved with change  | 
                        No material or nonsubstantive change to a currently approved collection | 1989-05-03 | |
| 
                         Approved without change  | 
                        Revision of a currently approved collection | 1988-05-02 | |
| 
                         Approved without change  | 
                        Reinstatement with change of a previously approved collection | 1985-02-01 | |
| 
                         Approved without change  | 
                        Reinstatement with change of a previously approved collection | 1983-11-07 | |
| 
                         Approved without change  | 
                        Revision of a currently approved collection | 1983-02-10 | |
| 
                         Approved without change  | 
                        Revision of a currently approved collection | 1978-06-20 |