| Value | Category | Cases | |
|---|---|---|---|
| 1976 | 39 |
9.7%
|
|
| 1980 | 5 |
1.2%
|
|
| 1982 | 46 |
11.5%
|
|
| 1983 | 30 |
7.5%
|
|
| 1985 | 24 |
6%
|
|
| 1986 | 3 |
0.7%
|
|
| 1987 | 1 |
0.2%
|
|
| 1988 | 8 |
2%
|
|
| 1989 | 49 |
12.2%
|
|
| 1990 | 1 |
0.2%
|
|
| 1991 | 80 |
20%
|
|
| 1992 | 54 |
13.5%
|
|
| 1993 | 9 |
2.2%
|
|
| 1994 | 52 |
13%
|
|
| Sysmiss | 6204 |