| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1996 | 106 | 千吨 | 2026-9 |
| 1995 | 98 | 千吨 | 2026-9 |
| 1994 | 77 | 千吨 | 2026-9 |
| 1993 | 64 | 千吨 | 2026-9 |
| 1992 | 78 | 千吨 | 2026-9 |
| 1991 | 59 | 千吨 | 2026-9 |
| 1990 | 133 | 千吨 | 2026-9 |
| 1989 | 58 | 千吨 | 2026-9 |
| 1988 | 46 | 千吨 | 2026-9 |
| 1987 | 110 | 千吨 | 2026-9 |
| 1986 | 285 | 千吨 | 2026-9 |
| 1985 | 191 | 千吨 | 2026-9 |
| 1984 | 257 | 千吨 | 2026-9 |
| 1983 | 260 | 千吨 | 2026-9 |
| 1982 | 113 | 千吨 | 2026-9 |
| 1981 | 135 | 千吨 | 2026-9 |
| 1980 | 138 | 千吨 | 2026-9 |
| 1979 | 131 | 千吨 | 2026-9 |
| 1978 | 168 | 千吨 | 2026-9 |
| 1977 | 316 | 千吨 | 2026-9 |
| 1976 | 179 | 千吨 | 2026-9 |
| 1975 | 119 | 千吨 | 2026-9 |
| 1974 | 225 | 千吨 | 2026-9 |
| 1973 | 227 | 千吨 | 2026-9 |
| 1972 | 175 | 千吨 | 2026-9 |
| 1971 | 227 | 千吨 | 2026-9 |
| 1970 | 284 | 千吨 | 2026-9 |
| 1969 | 258 | 千吨 | 2026-9 |
| 1968 | 260 | 千吨 | 2026-9 |
| 1967 | 223 | 千吨 | 2026-9 |
| 1966 | 196 | 千吨 | 2026-9 |
| 1965 | 121 | 千吨 | 2026-9 |
| 1964 | 91 | 千吨 | 2026-9 |