| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1986/1987 | 29964 | 千公顷 | 2026-9 |
| 1985/1986 | 29058 | 千公顷 | 2026-9 |
| 1984/1985 | 30426 | 千公顷 | 2026-9 |
| 1983/1984 | 31700 | 千公顷 | 2026-9 |
| 1982/1983 | 29706 | 千公顷 | 2026-9 |
| 1981/1982 | 31781 | 千公顷 | 2026-9 |
| 1980/1981 | 31574 | 千公顷 | 2026-9 |
| 1979/1980 | 37005 | 千公顷 | 2026-9 |
| 1978/1979 | 32690 | 千公顷 | 2026-9 |
| 1977/1978 | 34514 | 千公顷 | 2026-9 |
| 1976/1977 | 34261 | 千公顷 | 2026-9 |
| 1975/1976 | 32548 | 千公顷 | 2026-9 |
| 1974/1975 | 31079 | 千公顷 | 2026-9 |
| 1973/1974 | 29387 | 千公顷 | 2026-9 |
| 1972/1973 | 27269 | 千公顷 | 2026-9 |
| 1971/1972 | 21566 | 千公顷 | 2026-9 |
| 1970/1971 | 21297 | 千公顷 | 2026-9 |
| 1969/1970 | 22484 | 千公顷 | 2026-9 |
| 1968/1969 | 19353 | 千公顷 | 2026-9 |
| 1967/1968 | 19125 | 千公顷 | 2026-9 |
| 1966/1967 | 19396 | 千公顷 | 2026-9 |
| 1965/1966 | 19737 | 千公顷 | 2026-9 |
| 1964/1965 | 21674 | 千公顷 | 2026-9 |
| 1963/1964 | 20470 | 千公顷 | 2026-9 |
| 1962/1963 | 16250 | 千公顷 | 2026-9 |
| 1961/1962 | 13375 | 千公顷 | 2026-9 |
| 1960/1961 | 12126 | 千公顷 | 2026-9 |