| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1990/1991 | 340 | 千克/公顷 | 2026-9 |
| 1989/1990 | 340 | 千克/公顷 | 2026-9 |
| 1988/1989 | 340 | 千克/公顷 | 2026-9 |
| 1987/1988 | 340 | 千克/公顷 | 2026-9 |
| 1986/1987 | 340 | 千克/公顷 | 2026-9 |
| 1985/1986 | 340 | 千克/公顷 | 2026-9 |
| 1984/1985 | 340 | 千克/公顷 | 2026-9 |
| 1983/1984 | 340 | 千克/公顷 | 2026-9 |
| 1982/1983 | 340 | 千克/公顷 | 2026-9 |
| 1981/1982 | 340 | 千克/公顷 | 2026-9 |
| 1980/1981 | 340 | 千克/公顷 | 2026-9 |
| 1979/1980 | 340 | 千克/公顷 | 2026-9 |
| 1978/1979 | 334 | 千克/公顷 | 2026-9 |
| 1977/1978 | 340 | 千克/公顷 | 2026-9 |
| 1976/1977 | 340 | 千克/公顷 | 2026-9 |
| 1975/1976 | 408 | 千克/公顷 | 2026-9 |
| 1974/1975 | 272 | 千克/公顷 | 2026-9 |
| 1973/1974 | 218 | 千克/公顷 | 2026-9 |
| 1972/1973 | 327 | 千克/公顷 | 2026-9 |
| 1971/1972 | 272 | 千克/公顷 | 2026-9 |
| 1970/1971 | 354 | 千克/公顷 | 2026-9 |
| 1969/1970 | 313 | 千克/公顷 | 2026-9 |
| 1968/1969 | 476 | 千克/公顷 | 2026-9 |
| 1967/1968 | 136 | 千克/公顷 | 2026-9 |
| 1966/1967 | 290 | 千克/公顷 | 2026-9 |
| 1965/1966 | 192 | 千克/公顷 | 2026-9 |
| 1964/1965 | 243 | 千克/公顷 | 2026-9 |
| 1963/1964 | 228 | 千克/公顷 | 2026-9 |
| 1962/1963 | 359 | 千克/公顷 | 2026-9 |
| 1961/1962 | 348 | 千克/公顷 | 2026-9 |
| 1960/1961 | 261 | 千克/公顷 | 2026-9 |