| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1996 | 368 | 千吨 | 2026-9 |
| 1995 | 360 | 千吨 | 2026-9 |
| 1994 | 353 | 千吨 | 2026-9 |
| 1993 | 334 | 千吨 | 2026-9 |
| 1992 | 328 | 千吨 | 2026-9 |
| 1991 | 330 | 千吨 | 2026-9 |
| 1990 | 311 | 千吨 | 2026-9 |
| 1989 | 320 | 千吨 | 2026-9 |
| 1988 | 299 | 千吨 | 2026-9 |
| 1987 | 299 | 千吨 | 2026-9 |
| 1986 | 274 | 千吨 | 2026-9 |
| 1985 | 248 | 千吨 | 2026-9 |
| 1984 | 227 | 千吨 | 2026-9 |
| 1983 | 218 | 千吨 | 2026-9 |
| 1982 | 224 | 千吨 | 2026-9 |
| 1981 | 207 | 千吨 | 2026-9 |
| 1980 | 194 | 千吨 | 2026-9 |
| 1979 | 183 | 千吨 | 2026-9 |
| 1978 | 166 | 千吨 | 2026-9 |
| 1977 | 168 | 千吨 | 2026-9 |
| 1976 | 169 | 千吨 | 2026-9 |
| 1975 | 173 | 千吨 | 2026-9 |
| 1974 | 169 | 千吨 | 2026-9 |
| 1973 | 161 | 千吨 | 2026-9 |
| 1972 | 161 | 千吨 | 2026-9 |
| 1971 | 153 | 千吨 | 2026-9 |
| 1970 | 140 | 千吨 | 2026-9 |
| 1969 | 136 | 千吨 | 2026-9 |
| 1968 | 142 | 千吨 | 2026-9 |
| 1967 | 150 | 千吨 | 2026-9 |
| 1966 | 142 | 千吨 | 2026-9 |
| 1965 | 136 | 千吨 | 2026-9 |
| 1964 | 124 | 千吨 | 2026-9 |