| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1967 | 1 |
1.4%
|
|
| 1969 | 1 |
1.4%
|
|
| 1973 | 1 |
1.4%
|
|
| 1981 | 2 |
2.8%
|
|
| 1985 | 1 |
1.4%
|
|
| 1987 | 1 |
1.4%
|
|
| 1993 | 1 |
1.4%
|
|
| 1994 | 1 |
1.4%
|
|
| 1996 | 1 |
1.4%
|
|
| 1997 | 1 |
1.4%
|
|
| 9998 | don't know | 60 |
84.5%
|
| Sysmiss | 6374 |