| 7/14/2008 | S-8 | Registration of Securities to be Offered to Employees Pursuant to Employee Benefit Plans |
| 7/14/2008 | S-8 | Registration of Securities to be Offered to Employees Pursuant to Employee Benefit Plans |
| 12/7/2007 | S-8 | Registration of Securities to be Offered to Employees Pursuant to Employee Benefit Plans |
| 5/9/2007 | S-8 | Registration of Securities to be Offered to Employees Pursuant to Employee Benefit Plans |
| 5/5/2006 | S-3 | Registration Statement for Securities Offered Pursuant to Transactions |
| 3/30/2006 | S-8 | Registration of Securities to be Offered to Employees Pursuant to Employee Benefit Plans |
| 3/30/2006 | S-3 | Registration Statement for Securities Offered Pursuant to Transactions |
| 11/3/2004 | S-8 | Registration of Securities to be Offered to Employees Pursuant to Employee Benefit Plans |
| 4/15/2004 | S-3 | Registration Statement for Securities Offered Pursuant to Transactions |
| 10/28/2002 | S-3/A | Registration Statement for Securities Offered Pursuant to Transactions |
| 8/27/2002 | S-8 | Registration of Securities to be Offered to Employees Pursuant to Employee Benefit Plans |
| 7/29/2002 | S-3 | Registration Statement for Securities Offered Pursuant to Transactions |
| 4/29/2002 | S-3 | Registration Statement for Securities Offered Pursuant to Transactions |
