| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1998/1999 | 408 | 千公顷 | 2026-9 |
| 1997/1998 | 424 | 千公顷 | 2026-9 |
| 1996/1997 | 426 | 千公顷 | 2026-9 |
| 1995/1996 | 373 | 千公顷 | 2026-9 |
| 1994/1995 | 376 | 千公顷 | 2026-9 |
| 1993/1994 | 351 | 千公顷 | 2026-9 |
| 1992/1993 | 364 | 千公顷 | 2026-9 |
| 1991/1992 | 367 | 千公顷 | 2026-9 |
| 1990/1991 | 373 | 千公顷 | 2026-9 |
| 1989/1990 | 331 | 千公顷 | 2026-9 |
| 1988/1989 | 347 | 千公顷 | 2026-9 |
| 1987/1988 | 329 | 千公顷 | 2026-9 |
| 1986/1987 | 334 | 千公顷 | 2026-9 |
| 1985/1986 | 318 | 千公顷 | 2026-9 |
| 1984/1985 | 308 | 千公顷 | 2026-9 |
| 1983/1984 | 273 | 千公顷 | 2026-9 |
| 1982/1983 | 301 | 千公顷 | 2026-9 |
| 1981/1982 | 284 | 千公顷 | 2026-9 |
| 1980/1981 | 303 | 千公顷 | 2026-9 |
| 1979/1980 | 312 | 千公顷 | 2026-9 |
| 1978/1979 | 322 | 千公顷 | 2026-9 |
| 1977/1978 | 317 | 千公顷 | 2026-9 |
| 1976/1977 | 295 | 千公顷 | 2026-9 |
| 1975/1976 | 296 | 千公顷 | 2026-9 |
| 1974/1975 | 316 | 千公顷 | 2026-9 |
| 1973/1974 | 324 | 千公顷 | 2026-9 |
| 1972/1973 | 320 | 千公顷 | 2026-9 |
| 1971/1972 | 313 | 千公顷 | 2026-9 |
| 1970/1971 | 316 | 千公顷 | 2026-9 |
| 1969/1970 | 313 | 千公顷 | 2026-9 |
| 1968/1969 | 295 | 千公顷 | 2026-9 |
| 1967/1968 | 281 | 千公顷 | 2026-9 |
| 1966/1967 | 271 | 千公顷 | 2026-9 |
| 1965/1966 | 274 | 千公顷 | 2026-9 |
| 1964/1965 | 277 | 千公顷 | 2026-9 |
| 1963/1964 | 264 | 千公顷 | 2026-9 |
| 1962/1963 | 268 | 千公顷 | 2026-9 |
| 1961/1962 | 277 | 千公顷 | 2026-9 |
| 1960/1961 | 279 | 千公顷 | 2026-9 |