| 年度 | 数值 | 单位 | 发布时间 |
|---|---|---|---|
| 2005/2006 | 5.41 | 吨/公顷 | 2026-9 |
| 2004/2005 | 5.474 | 吨/公顷 | 2026-9 |
| 2003/2004 | 3.167 | 吨/公顷 | 2026-9 |
| 2002/2003 | 4.67 | 吨/公顷 | 2026-9 |
| 2001/2002 | 4.5 | 吨/公顷 | 2026-9 |
| 2000/2001 | 2.439 | 吨/公顷 | 2026-9 |
| 1999/2000 | 4.846 | 吨/公顷 | 2026-9 |
| 1998/1999 | 3.83 | 吨/公顷 | 2026-9 |
| 1997/1998 | 4.421 | 吨/公顷 | 2026-9 |
| 1996/1997 | 3.73 | 吨/公顷 | 2026-9 |
| 1995/1996 | 4.248 | 吨/公顷 | 2026-9 |
| 1994/1995 | 3.408 | 吨/公顷 | 2026-9 |
| 1993/1994 | 2.881 | 吨/公顷 | 2026-9 |
| 1992/1993 | 2.975 | 吨/公顷 | 2026-9 |