| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1998 | 253 | 千吨 | 2026-9 |
| 1997 | 261 | 千吨 | 2026-9 |
| 1996 | 274 | 千吨 | 2026-9 |
| 1995 | 270 | 千吨 | 2026-9 |
| 1994 | 279 | 千吨 | 2026-9 |
| 1993 | 273 | 千吨 | 2026-9 |
| 1992 | 322 | 千吨 | 2026-9 |
| 1991 | 372 | 千吨 | 2026-9 |
| 1990 | 418 | 千吨 | 2026-9 |
| 1989 | 423 | 千吨 | 2026-9 |
| 1988 | 414 | 千吨 | 2026-9 |
| 1987 | 426 | 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 | 238 | 千吨 | 2026-9 |
| 1973 | 235 | 千吨 | 2026-9 |
| 1972 | 172 | 千吨 | 2026-9 |
| 1971 | 145 | 千吨 | 2026-9 |
| 1970 | 121 | 千吨 | 2026-9 |
| 1969 | 137 | 千吨 | 2026-9 |
| 1968 | 161 | 千吨 | 2026-9 |
| 1967 | 155 | 千吨 | 2026-9 |
| 1966 | 149 | 千吨 | 2026-9 |
| 1965 | 162 | 千吨 | 2026-9 |
| 1964 | 116 | 千吨 | 2026-9 |
| 1963 | 103 | 千吨 | 2026-9 |
| 1962 | 120 | 千吨 | 2026-9 |
| 1961 | 123 | 千吨 | 2026-9 |
| 1960 | 109 | 千吨 | 2026-9 |