| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1996 | 13 | 千吨 | 2026-9 |
| 1995 | 9 | 千吨 | 2026-9 |
| 1994 | 23 | 千吨 | 2026-9 |
| 1993 | 41 | 千吨 | 2026-9 |
| 1992 | 42 | 千吨 | 2026-9 |
| 1991 | 38 | 千吨 | 2026-9 |
| 1990 | 44 | 千吨 | 2026-9 |
| 1989 | 32 | 千吨 | 2026-9 |
| 1988 | 38 | 千吨 | 2026-9 |
| 1987 | 44 | 千吨 | 2026-9 |
| 1986 | 58 | 千吨 | 2026-9 |
| 1985 | 84 | 千吨 | 2026-9 |
| 1984 | 162 | 千吨 | 2026-9 |
| 1983 | 147 | 千吨 | 2026-9 |
| 1982 | 67 | 千吨 | 2026-9 |
| 1981 | 26 | 千吨 | 2026-9 |
| 1980 | 51 | 千吨 | 2026-9 |
| 1979 | 104 | 千吨 | 2026-9 |
| 1978 | 102 | 千吨 | 2026-9 |
| 1977 | 118 | 千吨 | 2026-9 |
| 1976 | 116 | 千吨 | 2026-9 |
| 1975 | 47 | 千吨 | 2026-9 |
| 1974 | 52 | 千吨 | 2026-9 |
| 1973 | 77 | 千吨 | 2026-9 |
| 1972 | 57 | 千吨 | 2026-9 |
| 1971 | 63 | 千吨 | 2026-9 |
| 1970 | 92 | 千吨 | 2026-9 |
| 1969 | 59 | 千吨 | 2026-9 |
| 1968 | 53 | 千吨 | 2026-9 |
| 1967 | 69 | 千吨 | 2026-9 |
| 1966 | 67 | 千吨 | 2026-9 |
| 1965 | 48 | 千吨 | 2026-9 |
| 1964 | 48 | 千吨 | 2026-9 |