| SE | - | 2003-05-30 | - |
| Annual report to shareholders | ARS | 2003-05-30 | 2002-12-31 |
| Quarterly report | 10-Q | 2003-05-14 | 2003-03-31 |
| Major company event | 8-K | 2003-05-02 | 2003-04-30 |
| Proxy statement | DEF 14A | 2003-04-16 | 2003-05-13 |
| Major company event (amended) | 8-K/A | 2003-04-09 | 2003-03-31 |
| Major company event | 8-K | 2003-04-07 | 2003-03-31 |
| Annual report | 10-K | 2003-03-31 | 2002-12-31 |
| Passive ownership stake (update) | SC 13G/A | 2003-02-14 | - |
| Passive ownership stake | SC 13G | 2003-02-13 | - |
| Passive ownership stake | SC 13G | 2003-02-13 | - |
| Quarterly report (amended) | 10-Q/A | 2003-02-07 | 2002-03-31 |
| Quarterly report | 10-Q | 2003-02-07 | 2002-09-30 |
| Quarterly report (amended) | 10-Q/A | 2003-02-07 | 2002-06-30 |
| Annual report (amended) | 10-K/A | 2003-02-07 | 2001-12-31 |
| Major company event | 8-K | 2002-12-16 | 2002-12-13 |
| NT 10-Q | - | 2002-11-15 | 2002-09-30 |
| Quarterly report | 10-Q | 2002-08-14 | 2002-06-30 |
| Major company event (amended) | 8-K/A | 2002-07-15 | 2002-06-24 |
| Major company event (amended) | 8-K/A | 2002-07-15 | 2002-06-24 |
| Employee plan annual report | 11-K | 2002-07-15 | 2001-12-31 |
| Major company event | 8-K | 2002-06-28 | 2002-06-24 |
| NT 11-K | - | 2002-06-28 | 2001-12-31 |
| Major company event | 8-K | 2002-06-28 | 2002-06-24 |
| Quarterly report | 10-Q | 2002-05-15 | 2002-03-31 |
| Proxy statement | DEF 14A | 2002-04-09 | 2002-05-07 |
| Annual report | 10-K | 2002-04-01 | 2001-12-31 |
| Passive ownership stake (update) | SC 13G/A | 2002-02-14 | - |
| Passive ownership stake (update) | SC 13G/A | 2002-02-08 | - |
| Passive ownership stake | SC 13G | 2002-02-07 | - |
| Quarterly report | 10-Q | 2001-11-14 | 2001-09-30 |
| Activist ownership stake (update) | SC 13D/A | 2001-10-15 | - |
| Passive ownership stake (update) | SC 13G/A | 2001-10-10 | - |
| Employee stock plan | S-8 | 2001-09-28 | - |
| Major company event | 8-K | 2001-09-20 | 2001-09-19 |
| Quarterly report | 10-Q | 2001-08-14 | 2001-06-30 |
| Proxy statement | DEF 14A | 2001-07-02 | 2001-08-14 |
| Annual report | 10-K | 2001-06-29 | 2001-03-31 |
| Major company event | 8-K | 2001-02-21 | 2001-02-06 |
| Passive ownership stake (update) | SC 13G/A | 2001-02-14 | - |
| Quarterly report | 10-Q | 2001-02-13 | 2000-12-31 |
| Passive ownership stake | SC 13G | 2001-02-07 | - |
| Passive ownership stake | SC 13G | 2001-02-02 | - |
| Passive ownership stake | SC 13G | 2001-01-19 | - |
| Activist ownership stake (update) | SC 13D/A | 2000-11-22 | - |
| Quarterly report | 10-Q | 2000-11-14 | 2000-09-30 |
| 424B1 | - | 2000-08-25 | - |
| S-3/A | - | 2000-08-23 | - |
| S-3/A | - | 2000-08-10 | - |
| Securities registration | S-3 | 2000-07-28 | - |
