| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1991/1992 | 1547 | 千公顷 | 2026-9 |
| 1990/1991 | 1495 | 千公顷 | 2026-9 |
| 1989/1990 | 1479 | 千公顷 | 2026-9 |
| 1988/1989 | 1506 | 千公顷 | 2026-9 |
| 1987/1988 | 1455 | 千公顷 | 2026-9 |
| 1986/1987 | 1346 | 千公顷 | 2026-9 |
| 1985/1986 | 1348 | 千公顷 | 2026-9 |
| 1984/1985 | 1458 | 千公顷 | 2026-9 |
| 1983/1984 | 1609 | 千公顷 | 2026-9 |
| 1982/1983 | 1558 | 千公顷 | 2026-9 |
| 1981/1982 | 1386 | 千公顷 | 2026-9 |
| 1980/1981 | 1516 | 千公顷 | 2026-9 |
| 1979/1980 | 1524 | 千公顷 | 2026-9 |
| 1978/1979 | 1712 | 千公顷 | 2026-9 |
| 1977/1978 | 1604 | 千公顷 | 2026-9 |
| 1976/1977 | 1723 | 千公顷 | 2026-9 |
| 1975/1976 | 1615 | 千公顷 | 2026-9 |
| 1974/1975 | 1842 | 千公顷 | 2026-9 |
| 1973/1974 | 1696 | 千公顷 | 2026-9 |
| 1972/1973 | 1924 | 千公顷 | 2026-9 |
| 1971/1972 | 1929 | 千公顷 | 2026-9 |
| 1970/1971 | 1831 | 千公顷 | 2026-9 |
| 1969/1970 | 2019 | 千公顷 | 2026-9 |
| 1968/1969 | 2010 | 千公顷 | 2026-9 |
| 1967/1968 | 1880 | 千公顷 | 2026-9 |
| 1966/1967 | 1830 | 千公顷 | 2026-9 |
| 1965/1966 | 1680 | 千公顷 | 2026-9 |
| 1964/1965 | 2100 | 千公顷 | 2026-9 |
| 1963/1964 | 2140 | 千公顷 | 2026-9 |
| 1962/1963 | 2130 | 千公顷 | 2026-9 |
| 1961/1962 | 1960 | 千公顷 | 2026-9 |
| 1960/1961 | 2060 | 千公顷 | 2026-9 |