| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1998/1999 | 280 | 千公顷 | 2026-9 |
| 1997/1998 | 290 | 千公顷 | 2026-9 |
| 1996/1997 | 290 | 千公顷 | 2026-9 |
| 1995/1996 | 400 | 千公顷 | 2026-9 |
| 1994/1995 | 389 | 千公顷 | 2026-9 |
| 1993/1994 | 362 | 千公顷 | 2026-9 |
| 1992/1993 | 320 | 千公顷 | 2026-9 |
| 1991/1992 | 383 | 千公顷 | 2026-9 |
| 1990/1991 | 360 | 千公顷 | 2026-9 |
| 1989/1990 | 360 | 千公顷 | 2026-9 |
| 1988/1989 | 345 | 千公顷 | 2026-9 |
| 1987/1988 | 295 | 千公顷 | 2026-9 |
| 1986/1987 | 318 | 千公顷 | 2026-9 |
| 1985/1986 | 260 | 千公顷 | 2026-9 |
| 1984/1985 | 315 | 千公顷 | 2026-9 |
| 1983/1984 | 323 | 千公顷 | 2026-9 |
| 1982/1983 | 352 | 千公顷 | 2026-9 |
| 1981/1982 | 382 | 千公顷 | 2026-9 |
| 1980/1981 | 426 | 千公顷 | 2026-9 |
| 1979/1980 | 472 | 千公顷 | 2026-9 |
| 1978/1979 | 473 | 千公顷 | 2026-9 |
| 1977/1978 | 529 | 千公顷 | 2026-9 |
| 1976/1977 | 524 | 千公顷 | 2026-9 |
| 1975/1976 | 574 | 千公顷 | 2026-9 |
| 1974/1975 | 477 | 千公顷 | 2026-9 |
| 1973/1974 | 458 | 千公顷 | 2026-9 |
| 1972/1973 | 445 | 千公顷 | 2026-9 |
| 1971/1972 | 434 | 千公顷 | 2026-9 |
| 1970/1971 | 403 | 千公顷 | 2026-9 |
| 1969/1970 | 412 | 千公顷 | 2026-9 |
| 1968/1969 | 402 | 千公顷 | 2026-9 |
| 1967/1968 | 387 | 千公顷 | 2026-9 |
| 1966/1967 | 416 | 千公顷 | 2026-9 |
| 1965/1966 | 372 | 千公顷 | 2026-9 |
| 1964/1965 | 358 | 千公顷 | 2026-9 |
| 1963/1964 | 343 | 千公顷 | 2026-9 |
| 1962/1963 | 303 | 千公顷 | 2026-9 |
| 1961/1962 | 305 | 千公顷 | 2026-9 |
| 1960/1961 | 296 | 千公顷 | 2026-9 |