| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1998/1999 | 1431 | 千公顷 | 2026-9 |
| 1997/1998 | 1324 | 千公顷 | 2026-9 |
| 1996/1997 | 1320 | 千公顷 | 2026-9 |
| 1995/1996 | 1414 | 千公顷 | 2026-9 |
| 1994/1995 | 1239 | 千公顷 | 2026-9 |
| 1993/1994 | 1209 | 千公顷 | 2026-9 |
| 1992/1993 | 1174 | 千公顷 | 2026-9 |
| 1991/1992 | 1314 | 千公顷 | 2026-9 |
| 1990/1991 | 1818 | 千公顷 | 2026-9 |
| 1989/1990 | 1804 | 千公顷 | 2026-9 |
| 1988/1989 | 1694 | 千公顷 | 2026-9 |
| 1987/1988 | 1849 | 千公顷 | 2026-9 |
| 1986/1987 | 1832 | 千公顷 | 2026-9 |
| 1985/1986 | 1875 | 千公顷 | 2026-9 |
| 1984/1985 | 1985 | 千公顷 | 2026-9 |
| 1983/1984 | 1931 | 千公顷 | 2026-9 |
| 1982/1983 | 1852 | 千公顷 | 2026-9 |
| 1981/1982 | 1975 | 千公顷 | 2026-9 |
| 1980/1981 | 2126 | 千公顷 | 2026-9 |
| 1979/1980 | 2129 | 千公顷 | 2026-9 |
| 1978/1979 | 2278 | 千公顷 | 2026-9 |
| 1977/1978 | 2313 | 千公顷 | 2026-9 |
| 1976/1977 | 2269 | 千公顷 | 2026-9 |
| 1975/1976 | 2121 | 千公顷 | 2026-9 |
| 1974/1975 | 2330 | 千公顷 | 2026-9 |
| 1973/1974 | 2368 | 千公顷 | 2026-9 |
| 1972/1973 | 2580 | 千公顷 | 2026-9 |
| 1971/1972 | 2632 | 千公顷 | 2026-9 |
| 1970/1971 | 2674 | 千公顷 | 2026-9 |
| 1969/1970 | 2766 | 千公顷 | 2026-9 |
| 1968/1969 | 2941 | 千公顷 | 2026-9 |
| 1967/1968 | 3028 | 千公顷 | 2026-9 |
| 1966/1967 | 3146 | 千公顷 | 2026-9 |
| 1965/1966 | 3501 | 千公顷 | 2026-9 |
| 1964/1965 | 3535 | 千公顷 | 2026-9 |
| 1963/1964 | 3562 | 千公顷 | 2026-9 |
| 1962/1963 | 3708 | 千公顷 | 2026-9 |
| 1961/1962 | 3867 | 千公顷 | 2026-9 |
| 1960/1961 | 4200 | 千公顷 | 2026-9 |