| Relationships | Role | Relationship Start | Relationship End |
| Blackrock Advisors, Llc | Parent | 3/31/1998 | 4/19/2005 |
| Blackrock Institutional Management Corporation | Parent | 12/31/1984 | 3/30/1998 |
| Advanced Investment Management, Limited Partnership | Subsidary | 6/30/1992 | 12/29/1999 |