| 年度 | 数值 | 单位 | 发布日期 |
| 1996 | 222 | 千吨 | 2026-9 |
| 1995 | 294 | 千吨 | 2026-9 |
| 1994 | 230 | 千吨 | 2026-9 |
| 1993 | 229 | 千吨 | 2026-9 |
| 1992 | 275 | 千吨 | 2026-9 |
| 1991 | 233 | 千吨 | 2026-9 |
| 1990 | 253 | 千吨 | 2026-9 |
| 1989 | 306 | 千吨 | 2026-9 |
| 1988 | 399 | 千吨 | 2026-9 |
| 1987 | 415 | 千吨 | 2026-9 |
| 1986 | 323 | 千吨 | 2026-9 |
| 1985 | 393 | 千吨 | 2026-9 |
| 1984 | 481 | 千吨 | 2026-9 |
| 1983 | 407 | 千吨 | 2026-9 |
| 1982 | 233 | 千吨 | 2026-9 |
| 1981 | 173 | 千吨 | 2026-9 |
| 1980 | 202 | 千吨 | 2026-9 |
| 1979 | 321 | 千吨 | 2026-9 |
| 1978 | 319 | 千吨 | 2026-9 |
| 1977 | 265 | 千吨 | 2026-9 |
| 1976 | 200 | 千吨 | 2026-9 |
| 1975 | 146 | 千吨 | 2026-9 |
| 1974 | 167 | 千吨 | 2026-9 |
| 1973 | 191 | 千吨 | 2026-9 |
| 1972 | 103 | 千吨 | 2026-9 |
| 1971 | 106 | 千吨 | 2026-9 |
| 1970 | 108 | 千吨 | 2026-9 |
| 1969 | 179 | 千吨 | 2026-9 |
| 1968 | 125 | 千吨 | 2026-9 |
| 1967 | 94 | 千吨 | 2026-9 |
| 1966 | 95 | 千吨 | 2026-9 |
| 1965 | 102 | 千吨 | 2026-9 |
| 1964 | 135 | 千吨 | 2026-9 |