| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1998 | 235 | 千吨 | 2026-9 |
| 1997 | 225 | 千吨 | 2026-9 |
| 1996 | 270 | 千吨 | 2026-9 |
| 1995 | 265 | 千吨 | 2026-9 |
| 1994 | 267 | 千吨 | 2026-9 |
| 1993 | 265 | 千吨 | 2026-9 |
| 1992 | 312 | 千吨 | 2026-9 |
| 1991 | 362 | 千吨 | 2026-9 |
| 1990 | 408 | 千吨 | 2026-9 |
| 1989 | 413 | 千吨 | 2026-9 |
| 1988 | 404 | 千吨 | 2026-9 |
| 1987 | 416 | 千吨 | 2026-9 |
| 1986 | 434 | 千吨 | 2026-9 |
| 1985 | 390 | 千吨 | 2026-9 |
| 1984 | 391 | 千吨 | 2026-9 |
| 1983 | 394 | 千吨 | 2026-9 |
| 1982 | 378 | 千吨 | 2026-9 |
| 1981 | 380 | 千吨 | 2026-9 |
| 1980 | 372 | 千吨 | 2026-9 |
| 1979 | 359 | 千吨 | 2026-9 |
| 1978 | 321 | 千吨 | 2026-9 |
| 1977 | 321 | 千吨 | 2026-9 |
| 1976 | 370 | 千吨 | 2026-9 |
| 1975 | 329 | 千吨 | 2026-9 |
| 1974 | 212 | 千吨 | 2026-9 |
| 1973 | 223 | 千吨 | 2026-9 |
| 1972 | 165 | 千吨 | 2026-9 |
| 1971 | 138 | 千吨 | 2026-9 |
| 1970 | 119 | 千吨 | 2026-9 |
| 1969 | 136 | 千吨 | 2026-9 |
| 1968 | 158 | 千吨 | 2026-9 |
| 1967 | 142 | 千吨 | 2026-9 |
| 1966 | 146 | 千吨 | 2026-9 |
| 1965 | 152 | 千吨 | 2026-9 |
| 1964 | 114 | 千吨 | 2026-9 |
| 1963 | 101 | 千吨 | 2026-9 |
| 1962 | 120 | 千吨 | 2026-9 |
| 1961 | 123 | 千吨 | 2026-9 |
| 1960 | 109 | 千吨 | 2026-9 |