| Annual report to shareholders | ARS | 2003-07-03 | 2003-04-26 |
| Employee plan annual report | 11-K | 2003-06-30 | 2002-12-31 |
| Annual report | 10-K | 2003-06-20 | 2003-04-26 |
| Major company event | 8-K | 2003-06-03 | 2003-06-03 |
| Major company event | 8-K | 2003-05-28 | 2003-04-26 |
| Passive ownership stake (update) | SC 13G/A | 2003-03-17 | - |
| Quarterly report | 10-Q | 2003-02-11 | 2003-01-25 |
| Passive ownership stake (update) | SC 13G/A | 2003-02-07 | - |
| Passive ownership stake | SC 13G | 2003-01-31 | - |
| Major company event | 8-K | 2003-01-14 | 2003-01-14 |
| Major company event | 8-K | 2002-12-19 | 2002-12-19 |
| Passive ownership stake (update) | SC 13G/A | 2002-11-20 | - |
| Quarterly report | 10-Q | 2002-11-12 | 2002-11-12 |
| Major company event | 8-K | 2002-08-22 | 2002-08-22 |
| Major company event | 8-K | 2002-08-14 | 2002-08-14 |
| Quarterly report | 10-Q | 2002-08-14 | 2002-07-27 |
| Major company event | 8-K | 2002-08-14 | 2002-08-14 |
| Annual report to shareholders | ARS | 2002-07-11 | 2002-04-27 |
| Proxy statement | DEF 14A | 2002-07-10 | 2002-08-14 |
| Employee plan annual report | 11-K | 2002-06-28 | 2001-12-31 |
| Annual report | 10-K | 2002-06-24 | 2002-04-27 |
| Major company event | 8-K | 2002-05-29 | 2002-04-27 |
| Passive ownership stake (update) | SC 13G/A | 2002-05-09 | - |
| Passive ownership stake (update) | SC 13G/A | 2002-04-23 | - |
| Major company event | 8-K | 2002-04-11 | 2002-04-08 |
| Passive ownership stake (update) | SC 13G/A | 2002-03-27 | - |
| Passive ownership stake | SC 13G | 2002-02-26 | - |
| Passive ownership stake (update) | SC 13G/A | 2002-02-26 | - |
| Passive ownership stake | SC 13G | 2002-02-14 | - |
| Passive ownership stake (update) | SC 13G/A | 2002-02-13 | - |
| Quarterly report | 10-Q | 2002-02-13 | 2002-01-26 |
| Major company event | 8-K | 2002-01-18 | 2002-01-17 |
| Passive ownership stake (update) | SC 13G/A | 2002-01-14 | - |
| Major company event | 8-K | 2001-12-04 | 2001-12-04 |
| Major company event | 8-K | 2001-12-03 | 2001-12-03 |
| Quarterly report | 10-Q | 2001-11-14 | 2001-10-27 |
| Major company event | 8-K | 2001-10-25 | 2001-10-25 |
| Quarterly report | 10-Q | 2001-09-07 | 2001-07-28 |
| Major company event | 8-K | 2001-08-15 | 2001-08-15 |
| Passive ownership stake (update) | SC 13G/A | 2001-08-09 | - |
| Annual report | 10-K | 2001-07-27 | 2001-07-27 |
| Proxy statement | DEF 14A | 2001-06-29 | 2001-07-30 |
| Employee plan annual report | 11-K | 2001-06-29 | 2001-06-29 |
| Major company event | 8-K | 2001-06-01 | 2001-05-31 |
| Major company event | 8-K | 2001-05-31 | 2001-05-30 |
| Major company event | 8-K | 2001-04-19 | 2001-04-19 |
| Major company event | 8-K | 2001-03-29 | 2001-03-29 |
| Passive ownership stake | SC 13G | 2001-02-15 | - |
| Passive ownership stake | SC 13G | 2001-02-14 | - |
| Passive ownership stake | SC 13G | 2001-02-14 | - |
