| 序号 | 时间（年） | 单位：百克/公顷 |
|---|---|---|
| 注：时间后面标注“E”其对应的值为系统根据历史数据预测所得，仅供参考。 | ||
| 1 | 2002 | 138.75 |
| 2 | 2001 | 119.47 |
| 3 | 2000 | 118.08 |
| 4 | 1999 | 123.27 |
| 5 | 1998 | 120.76 |
| 6 | 1997 | 127.05 |
| 7 | 1996 | 128.29 |
| 8 | 1995 | 113.87 |
| 9 | 1994 | 124.14 |
| 10 | 1993 | 137.82 |
| 11 | 1992 | 133.73 |
| 12 | 1991 | 136.52 |
| 13 | 1990 | 138.30 |
| 14 | 1989 | 155.64 |
| 15 | 1988 | 141.59 |
| 16 | 1987 | 125.00 |
| 17 | 1986 | 134.87 |
| 18 | 1985 | 142.87 |
| 19 | 1984 | 147.80 |
| 20 | 1983 | 143.80 |
| 21 | 1982 | 163.14 |
| 22 | 1981 | 172.09 |
| 23 | 1980 | 151.73 |
| 24 | 1979 | 135.57 |
| 25 | 1978 | 122.71 |
| 26 | 1977 | 122.44 |
| 27 | 1976 | 118.72 |
| 28 | 1975 | 114.00 |
| 29 | 1974 | 107.33 |
| 30 | 1973 | 101.08 |
| 31 | 1972 | 98.95 |
| 32 | 1971 | 90.28 |
| 33 | 1970 | 79.32 |
| 34 | 1969 | 69.89 |
| 35 | 1968 | 67.75 |
| 36 | 1967 | 65.75 |
| 37 | 1966 | 58.69 |
| 38 | 1965 | 52.36 |
| 39 | 1964 | 48.58 |
| 40 | 1963 | 45.96 |
| 41 | 1962 | 39.53 |
| 42 | 1961 | 35.83 |
图表颜色：
图表起止时间： - （拖动下面左右滑块改变图表起始时间）
