| Passive ownership stake | SC 13G | 2003-02-07 | - |
| Passive ownership stake (update) | SC 13G/A | 2003-02-06 | - |
| Passive ownership stake (update) | SC 13G/A | 2003-02-06 | - |
| Passive ownership stake (update) | SC 13G/A | 2003-01-31 | - |
| Passive ownership stake (update) | SC 13G/A | 2003-01-15 | - |
| Quarterly report | 10-Q | 2003-01-13 | 2002-11-30 |
| Annual report to shareholders | ARS | 2002-12-09 | 2002-08-31 |
| Proxy statement | DEF 14A | 2002-12-06 | 2003-01-08 |
| Annual report | 10-K | 2002-11-26 | 2002-08-31 |
| Quarterly report | 10-Q | 2002-07-12 | 2002-06-01 |
| Employee plan annual report | 11-K | 2002-06-28 | 2001-12-31 |
| Major company event (amended) | 8-K/A | 2002-05-28 | 2002-05-15 |
| Major company event (amended) | 8-K/A | 2002-05-22 | 2002-05-15 |
| Major company event | 8-K | 2002-05-16 | 2002-05-15 |
| Quarterly report | 10-Q | 2002-04-09 | 2002-03-02 |
| Employee stock plan | S-8 | 2002-03-11 | - |
| Passive ownership stake (update) | SC 13G/A | 2002-02-15 | - |
| Passive ownership stake (update) | SC 13G/A | 2002-02-08 | - |
| Passive ownership stake | SC 13G | 2002-02-05 | - |
| Passive ownership stake (update) | SC 13G/A | 2002-01-28 | - |
| Passive ownership stake (update) | SC 13G/A | 2002-01-16 | - |
| Quarterly report | 10-Q | 2002-01-15 | 2001-12-01 |
| Proxy statement | DEF 14A | 2001-12-05 | 2002-01-04 |
| Annual report | 10-K | 2001-11-07 | 2001-09-01 |
| Quarterly report | 10-Q | 2001-07-05 | 2001-05-26 |
| Employee plan annual report | 11-K | 2001-06-14 | 2000-12-31 |
| Quarterly report | 10-Q | 2001-04-04 | 2001-02-24 |
| Passive ownership stake (update) | SC 13G/A | 2001-02-15 | - |
| Passive ownership stake (update) | SC 13G/A | 2001-02-14 | - |
| Passive ownership stake (update) | SC 13G/A | 2001-02-08 | - |
| Passive ownership stake | SC 13G | 2001-01-23 | - |
| Passive ownership stake | SC 13G | 2001-01-19 | - |
| Quarterly report | 10-Q | 2001-01-09 | 2000-11-25 |
| Proxy statement | DEF 14A | 2000-12-06 | 2000-01-05 |
| Annual report | 10-K | 2000-11-14 | 2000-08-26 |
| Passive ownership stake (update) | SC 13G/A | 2000-09-08 | - |
| Quarterly report | 10-Q | 2000-06-29 | 2000-05-27 |
| Employee plan annual report | 11-K | 2000-06-27 | 1999-12-31 |
| Quarterly report | 10-Q | 2000-04-11 | 2000-02-26 |
| Passive ownership stake | SC 13G | 2000-02-15 | - |
| Passive ownership stake | SC 13G | 2000-02-14 | - |
| Passive ownership stake | SC 13G | 2000-02-11 | - |
| Passive ownership stake (update) | SC 13G/A | 2000-02-07 | - |
| Passive ownership stake | SC 13G | 2000-01-26 | - |
| Quarterly report | 10-Q | 2000-01-11 | 1999-11-27 |
| Proxy statement | DEF 14A | 1999-12-08 | 2000-01-07 |
| Annual report | 10-K | 1999-11-19 | 1999-08-28 |
| Employee plan annual report | 11-K | 1999-07-08 | 1998-12-31 |
| Quarterly report | 10-Q | 1999-07-08 | 1999-05-29 |
| NT 11-K | - | 1999-06-30 | 1998-12-31 |
