| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1990/1991 | 163 | 千公顷 | 2026-9 |
| 1989/1990 | 175 | 千公顷 | 2026-9 |
| 1988/1989 | 146 | 千公顷 | 2026-9 |
| 1987/1988 | 164 | 千公顷 | 2026-9 |
| 1986/1987 | 171 | 千公顷 | 2026-9 |
| 1985/1986 | 168 | 千公顷 | 2026-9 |
| 1984/1985 | 164 | 千公顷 | 2026-9 |
| 1983/1984 | 161 | 千公顷 | 2026-9 |
| 1982/1983 | 166 | 千公顷 | 2026-9 |
| 1981/1982 | 165 | 千公顷 | 2026-9 |
| 1980/1981 | 172 | 千公顷 | 2026-9 |
| 1979/1980 | 155 | 千公顷 | 2026-9 |
| 1978/1979 | 151 | 千公顷 | 2026-9 |
| 1977/1978 | 120 | 千公顷 | 2026-9 |
| 1976/1977 | 140 | 千公顷 | 2026-9 |
| 1975/1976 | 164 | 千公顷 | 2026-9 |
| 1974/1975 | 150 | 千公顷 | 2026-9 |
| 1973/1974 | 165 | 千公顷 | 2026-9 |
| 1972/1973 | 150 | 千公顷 | 2026-9 |
| 1971/1972 | 114 | 千公顷 | 2026-9 |
| 1970/1971 | 90 | 千公顷 | 2026-9 |
| 1969/1970 | 100 | 千公顷 | 2026-9 |
| 1968/1969 | 105 | 千公顷 | 2026-9 |
| 1967/1968 | 96 | 千公顷 | 2026-9 |
| 1966/1967 | 55 | 千公顷 | 2026-9 |
| 1965/1966 | 96 | 千公顷 | 2026-9 |
| 1964/1965 | 100 | 千公顷 | 2026-9 |