| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1998/1999 | 466 | 千公顷 | 2026-9 |
| 1997/1998 | 317 | 千公顷 | 2026-9 |
| 1996/1997 | 283 | 千公顷 | 2026-9 |
| 1995/1996 | 606 | 千公顷 | 2026-9 |
| 1994/1995 | 370 | 千公顷 | 2026-9 |
| 1993/1994 | 349 | 千公顷 | 2026-9 |
| 1992/1993 | 418 | 千公顷 | 2026-9 |
| 1991/1992 | 468 | 千公顷 | 2026-9 |
| 1990/1991 | 500 | 千公顷 | 2026-9 |
| 1989/1990 | 570 | 千公顷 | 2026-9 |
| 1988/1989 | 471 | 千公顷 | 2026-9 |
| 1987/1988 | 499 | 千公顷 | 2026-9 |
| 1986/1987 | 515 | 千公顷 | 2026-9 |
| 1985/1986 | 467 | 千公顷 | 2026-9 |
| 1984/1985 | 396 | 千公顷 | 2026-9 |
| 1983/1984 | 247 | 千公顷 | 2026-9 |
| 1982/1983 | 259 | 千公顷 | 2026-9 |
| 1981/1982 | 277 | 千公顷 | 2026-9 |
| 1980/1981 | 320 | 千公顷 | 2026-9 |
| 1979/1980 | 180 | 千公顷 | 2026-9 |
| 1978/1979 | 337 | 千公顷 | 2026-9 |
| 1977/1978 | 400 | 千公顷 | 2026-9 |
| 1976/1977 | 398 | 千公顷 | 2026-9 |
| 1975/1976 | 309 | 千公顷 | 2026-9 |
| 1974/1975 | 258 | 千公顷 | 2026-9 |
| 1973/1974 | 315 | 千公顷 | 2026-9 |
| 1972/1973 | 276 | 千公顷 | 2026-9 |
| 1971/1972 | 362 | 千公顷 | 2026-9 |
| 1970/1971 | 298 | 千公顷 | 2026-9 |
| 1969/1970 | 148 | 千公顷 | 2026-9 |
| 1968/1969 | 361 | 千公顷 | 2026-9 |
| 1967/1968 | 315 | 千公顷 | 2026-9 |
| 1966/1967 | 272 | 千公顷 | 2026-9 |
| 1965/1966 | 274 | 千公顷 | 2026-9 |
| 1964/1965 | 237 | 千公顷 | 2026-9 |