| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1986/1987 | 3475 | 千公顷 | 2026-9 |
| 1985/1986 | 3316 | 千公顷 | 2026-9 |
| 1984/1985 | 3347 | 千公顷 | 2026-9 |
| 1983/1984 | 3192 | 千公顷 | 2026-9 |
| 1982/1983 | 3188 | 千公顷 | 2026-9 |
| 1981/1982 | 3168 | 千公顷 | 2026-9 |
| 1980/1981 | 3147 | 千公顷 | 2026-9 |
| 1979/1980 | 3090 | 千公顷 | 2026-9 |
| 1978/1979 | 3038 | 千公顷 | 2026-9 |
| 1977/1978 | 2992 | 千公顷 | 2026-9 |
| 1976/1977 | 2950 | 千公顷 | 2026-9 |
| 1975/1976 | 2924 | 千公顷 | 2026-9 |
| 1974/1975 | 2879 | 千公顷 | 2026-9 |
| 1973/1974 | 2742 | 千公顷 | 2026-9 |
| 1972/1973 | 2735 | 千公顷 | 2026-9 |
| 1971/1972 | 2770 | 千公顷 | 2026-9 |
| 1970/1971 | 2746 | 千公顷 | 2026-9 |
| 1969/1970 | 2550 | 千公顷 | 2026-9 |
| 1968/1969 | 2469 | 千公顷 | 2026-9 |
| 1967/1968 | 2428 | 千公顷 | 2026-9 |
| 1966/1967 | 2469 | 千公顷 | 2026-9 |
| 1965/1966 | 2428 | 千公顷 | 2026-9 |
| 1964/1965 | 2469 | 千公顷 | 2026-9 |
| 1963/1964 | 2469 | 千公顷 | 2026-9 |
| 1962/1963 | 2388 | 千公顷 | 2026-9 |
| 1961/1962 | 2331 | 千公顷 | 2026-9 |
| 1960/1961 | 2191 | 千公顷 | 2026-9 |