| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1988 | 1 |
2%
|
|
| 1991 | 1 |
2%
|
|
| 1994 | 1 |
2%
|
|
| 1995 | 1 |
2%
|
|
| 1996 | 1 |
2%
|
|
| 1998 | 5 |
9.8%
|
|
| 1999 | 6 |
11.8%
|
|
| 2000 | 5 |
9.8%
|
|
| 2001 | 7 |
13.7%
|
|
| 2002 | 9 |
17.6%
|
|
| 2003 | 8 |
15.7%
|
|
| 2004 | 6 |
11.8%
|
|
| Sysmiss | 5103 |