| Value | Category | Cases | |
|---|---|---|---|
| 1980 | 1990 | 0 |
0%
|
| 1981 | 1981 | 0 |
0%
|
| 1982 | 1982 | 0 |
0%
|
| 1983 | 1983 | 0 |
0%
|
| 1984 | 1984 | 5 |
0.3%
|
| 1985 | 1985 | 2 |
0.1%
|
| 1986 | 1986 | 1 |
0.1%
|
| 1987 | 1987 | 0 |
0%
|
| 1988 | 1988 | 0 |
0%
|
| 1989 | 1989 | 0 |
0%
|
| 1990 | 1990 | 1 |
0.1%
|
| 1991 | 1991 | 2 |
0.1%
|
| 1992 | 1992 | 3 |
0.2%
|
| 1993 | 1993 | 13 |
0.9%
|
| 1994 | 1994 | 61 |
4.1%
|
| 1995 | 1995 | 320 |
21.7%
|
| 1996 | 1996 | 462 |
31.3%
|
| 1997 | 1997 | 608 |
41.1%
|
| 1998 | 1998 | 0 |
0%
|
| 1999 | 1999 | 0 |
0%
|
| 9996 | N/A | 0 |
0%
|
| 9997 | Refuse | 0 |
0%
|
| 9998 | DK | 0 |
0%
|
| 9999 | Miss | 0 |
0%
|
| Sysmiss | 8878 |