| 年度 | 数值 | 单位 | 发布日期 |
|---|---|---|---|
| 2005/2006 | 1.846 | 吨/公顷 | 2026-9 |
| 2004/2005 | 1.846 | 吨/公顷 | 2026-9 |
| 2003/2004 | 1.692 | 吨/公顷 | 2026-9 |
| 2002/2003 | 1.923 | 吨/公顷 | 2026-9 |
| 2001/2002 | 1.923 | 吨/公顷 | 2026-9 |
| 2000/2001 | 1.524 | 吨/公顷 | 2026-9 |
| 1999/2000 | 1.821 | 吨/公顷 | 2026-9 |
| 1998/1999 | 1.718 | 吨/公顷 | 2026-9 |
| 1997/1998 | 1.592 | 吨/公顷 | 2026-9 |
| 1996/1997 | 1.567 | 吨/公顷 | 2026-9 |
| 1995/1996 | 1.663 | 吨/公顷 | 2026-9 |
| 1994/1995 | 1.703 | 吨/公顷 | 2026-9 |
| 1993/1994 | 1.507 | 吨/公顷 | 2026-9 |
| 1992/1993 | 1.688 | 吨/公顷 | 2026-9 |