| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1986 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 2 |
| 1987 | 1 | 0 | 0 | 2 | 0 | 1 | 0 | 0 | 3 | 2 | 0 | 0 |
| 1988 | 12 | 4 | 0 | 0 | 2 | 1 | 0 | 0 | 18 | 5 | 0 | 0 |
| 1989 | 0 | 0 | 1 | 0 | 10 | 0 | 0 | 0 | 0 | 1 | 1 | 0 |
| 1990 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 1 | 0 | 0 |
| 1991 | 0 | 3 | 0 | 0 | 22 | 8 | 7 | 5 | 1 | 0 | 2 | 0 |
| 1992 | 0 | 0 | 1 | 3 | 3 | 3 | 1 | 0 | 2 | 1 | 0 | 0 |
| 1993 | 0 | 0 | 0 | 0 | 2 | 0 | 1 | 0 | 0 | 1 | 1 | 0 |
| 1994 | 0 | 0 | 0 | 1 | 0 | 3 | 0 | 6 | 5 | 0 | 2 | 28 |
| 1995 | 3 | 0 | 0 | 0 | 7 | 0 | 0 | 0 | 4 | 0 | 1 | 4 |
| 1996 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |