| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1996 | 475 | 千吨 | 2026-9 |
| 1995 | 458 | 千吨 | 2026-9 |
| 1994 | 438 | 千吨 | 2026-9 |
| 1993 | 421 | 千吨 | 2026-9 |
| 1992 | 316 | 千吨 | 2026-9 |
| 1991 | 280 | 千吨 | 2026-9 |
| 1990 | 269 | 千吨 | 2026-9 |
| 1989 | 259 | 千吨 | 2026-9 |
| 1988 | 248 | 千吨 | 2026-9 |
| 1987 | 247 | 千吨 | 2026-9 |
| 1986 | 237 | 千吨 | 2026-9 |
| 1985 | 248 | 千吨 | 2026-9 |
| 1984 | 239 | 千吨 | 2026-9 |
| 1983 | 229 | 千吨 | 2026-9 |
| 1982 | 222 | 千吨 | 2026-9 |
| 1981 | 223 | 千吨 | 2026-9 |
| 1980 | 232 | 千吨 | 2026-9 |
| 1979 | 224 | 千吨 | 2026-9 |
| 1978 | 198 | 千吨 | 2026-9 |
| 1977 | 186 | 千吨 | 2026-9 |
| 1976 | 175 | 千吨 | 2026-9 |
| 1975 | 154 | 千吨 | 2026-9 |
| 1974 | 163 | 千吨 | 2026-9 |
| 1973 | 161 | 千吨 | 2026-9 |
| 1972 | 142 | 千吨 | 2026-9 |
| 1971 | 131 | 千吨 | 2026-9 |
| 1970 | 98 | 千吨 | 2026-9 |
| 1969 | 91 | 千吨 | 2026-9 |
| 1968 | 89 | 千吨 | 2026-9 |
| 1967 | 82 | 千吨 | 2026-9 |
| 1966 | 77 | 千吨 | 2026-9 |
| 1965 | 64 | 千吨 | 2026-9 |
| 1964 | 59 | 千吨 | 2026-9 |