| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1998/1999 | 550 | 千公顷 | 2026-9 |
| 1997/1998 | 617 | 千公顷 | 2026-9 |
| 1996/1997 | 500 | 千公顷 | 2026-9 |
| 1995/1996 | 570 | 千公顷 | 2026-9 |
| 1994/1995 | 760 | 千公顷 | 2026-9 |
| 1993/1994 | 640 | 千公顷 | 2026-9 |
| 1992/1993 | 628 | 千公顷 | 2026-9 |
| 1991/1992 | 1020 | 千公顷 | 2026-9 |
| 1990/1991 | 750 | 千公顷 | 2026-9 |
| 1989/1990 | 768 | 千公顷 | 2026-9 |
| 1988/1989 | 750 | 千公顷 | 2026-9 |
| 1987/1988 | 560 | 千公顷 | 2026-9 |
| 1986/1987 | 575 | 千公顷 | 2026-9 |
| 1985/1986 | 680 | 千公顷 | 2026-9 |
| 1984/1985 | 672 | 千公顷 | 2026-9 |
| 1983/1984 | 741 | 千公顷 | 2026-9 |
| 1982/1983 | 943 | 千公顷 | 2026-9 |
| 1981/1982 | 917 | 千公顷 | 2026-9 |
| 1980/1981 | 810 | 千公顷 | 2026-9 |
| 1979/1980 | 773 | 千公顷 | 2026-9 |
| 1978/1979 | 722 | 千公顷 | 2026-9 |
| 1977/1978 | 595 | 千公顷 | 2026-9 |
| 1976/1977 | 410 | 千公顷 | 2026-9 |
| 1975/1976 | 442 | 千公顷 | 2026-9 |
| 1974/1975 | 402 | 千公顷 | 2026-9 |
| 1973/1974 | 315 | 千公顷 | 2026-9 |
| 1972/1973 | 327 | 千公顷 | 2026-9 |
| 1971/1972 | 330 | 千公顷 | 2026-9 |
| 1970/1971 | 288 | 千公顷 | 2026-9 |
| 1969/1970 | 308 | 千公顷 | 2026-9 |
| 1968/1969 | 292 | 千公顷 | 2026-9 |
| 1967/1968 | 257 | 千公顷 | 2026-9 |
| 1966/1967 | 246 | 千公顷 | 2026-9 |
| 1965/1966 | 233 | 千公顷 | 2026-9 |
| 1964/1965 | 196 | 千公顷 | 2026-9 |
| 1963/1964 | 224 | 千公顷 | 2026-9 |
| 1962/1963 | 250 | 千公顷 | 2026-9 |
| 1961/1962 | 284 | 千公顷 | 2026-9 |
| 1960/1961 | 266 | 千公顷 | 2026-9 |