| 年度 | 数值 | 单位 | 发布日期 |
|---|---|---|---|
| 1998/1999 | 390 | 吨 | 2026-9 |
| 1997/1998 | 833 | 吨 | 2026-9 |
| 1996/1997 | 714 | 吨 | 2026-9 |
| 1995/1996 | 1 | 吨 | 2026-9 |
| 1994/1995 | 21 | 吨 | 2026-9 |
| 1993/1994 | 0 | 吨 | 2026-9 |
| 1992/1993 | 0 | 吨 | 2026-9 |
| 1991/1992 | 0 | 吨 | 2026-9 |
| 1990/1991 | 95 | 吨 | 2026-9 |
| 1989/1990 | 192 | 吨 | 2026-9 |
| 1988/1989 | 29 | 吨 | 2026-9 |
| 1987/1988 | 11 | 吨 | 2026-9 |
| 1986/1987 | 2 | 吨 | 2026-9 |
| 1985/1986 | 4 | 吨 | 2026-9 |
| 1984/1985 | 5 | 吨 | 2026-9 |
| 1983/1984 | 9 | 吨 | 2026-9 |