| Date | Action |
| 04/03/2018 | License Renewed |
| 04/02/2018 | Renewal Reminder Letter Sent |
| 04/11/2008 | License Renewed |
| 04/07/2008 | Renewal Reminder Letter Sent |
| 12/11/2006 | License Modified |
| 08/14/2002 | License Modified |
| 08/13/1999 | License Converted |
| 02/02/1999 | Internal Correction Applied |
| 01/25/1999 | Internal Correction Applied |
| 07/22/1998 | License Modified |
| 04/09/1998 | License Renewed |
| 08/24/1993 | License Modified |
| 06/29/1993 | License Modified |
| 11/05/1992 | License Modified |
| 10/03/1992 | License Modified |
| 11/09/1987 | License Modified |
| 11/03/1982 | License Renewed |