| passive delisting | Initiative delisting | total |
1998 | 489 | 280 | 769 |
1999 | 440 | 433 | 873 |
2000 | 240 | 235 | 475 |
2001 | 390 | 275 | 665 |
2002 | 280 | 289 | 569 |
total | 1839 | 1512 | 3351 |