| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1957 | 1 |
0.5%
|
|
| 1960 | 1 |
0.5%
|
|
| 1965 | 1 |
0.5%
|
|
| 1966 | 2 |
1%
|
|
| 1967 | 1 |
0.5%
|
|
| 1969 | 1 |
0.5%
|
|
| 1972 | 1 |
0.5%
|
|
| 1974 | 1 |
0.5%
|
|
| 1976 | 1 |
0.5%
|
|
| 1977 | 1 |
0.5%
|
|
| 1978 | 2 |
1%
|
|
| 1979 | 1 |
0.5%
|
|
| 1981 | 1 |
0.5%
|
|
| 1983 | 2 |
1%
|
|
| 1985 | 2 |
1%
|
|
| 1989 | 1 |
0.5%
|
|
| 1990 | 5 |
2.4%
|
|
| 1991 | 3 |
1.4%
|
|
| 1992 | 3 |
1.4%
|
|
| 1993 | 1 |
0.5%
|
|
| 1995 | 1 |
0.5%
|
|
| 1996 | 9 |
4.3%
|
|
| 1997 | 4 |
1.9%
|
|
| 1998 | 1 |
0.5%
|
|
| 9998 | don't know | 162 |
77.5%
|
| Sysmiss | 6236 |