| 年度 | 数值 | 单位 | 发布日期 |
|---|---|---|---|
| 2005/2006 | 2.048 | 吨/公顷 | 2026-9 |
| 2004/2005 | 2.095 | 吨/公顷 | 2026-9 |
| 2003/2004 | 1.818 | 吨/公顷 | 2026-9 |
| 2002/2003 | 1.647 | 吨/公顷 | 2026-9 |
| 2001/2002 | 1.647 | 吨/公顷 | 2026-9 |
| 2000/2001 | 1.48 | 吨/公顷 | 2026-9 |
| 1999/2000 | 1.484 | 吨/公顷 | 2026-9 |
| 1998/1999 | 1.75 | 吨/公顷 | 2026-9 |
| 1997/1998 | 1.625 | 吨/公顷 | 2026-9 |
| 1996/1997 | 1.902 | 吨/公顷 | 2026-9 |
| 1995/1996 | 1.746 | 吨/公顷 | 2026-9 |
| 1994/1995 | 1.826 | 吨/公顷 | 2026-9 |
| 1993/1994 | 1.935 | 吨/公顷 | 2026-9 |
| 1992/1993 | 1.851 | 吨/公顷 | 2026-9 |
| 1991/1992 | 1.851 | 吨/公顷 | 2026-9 |
| 1990/1991 | 2.23 | 吨/公顷 | 2026-9 |