| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1996 | 798 | 千吨 | 2026-9 |
| 1995 | 755 | 千吨 | 2026-9 |
| 1994 | 722 | 千吨 | 2026-9 |
| 1993 | 704 | 千吨 | 2026-9 |
| 1992 | 618 | 千吨 | 2026-9 |
| 1991 | 511 | 千吨 | 2026-9 |
| 1990 | 461 | 千吨 | 2026-9 |
| 1989 | 435 | 千吨 | 2026-9 |
| 1988 | 411 | 千吨 | 2026-9 |
| 1987 | 360 | 千吨 | 2026-9 |
| 1986 | 305 | 千吨 | 2026-9 |
| 1985 | 226 | 千吨 | 2026-9 |
| 1984 | 214 | 千吨 | 2026-9 |
| 1983 | 199 | 千吨 | 2026-9 |
| 1982 | 183 | 千吨 | 2026-9 |
| 1981 | 185 | 千吨 | 2026-9 |
| 1980 | 195 | 千吨 | 2026-9 |
| 1979 | 180 | 千吨 | 2026-9 |
| 1978 | 171 | 千吨 | 2026-9 |
| 1977 | 164 | 千吨 | 2026-9 |
| 1976 | 80 | 千吨 | 2026-9 |
| 1975 | 80 | 千吨 | 2026-9 |
| 1974 | 81 | 千吨 | 2026-9 |
| 1973 | 84 | 千吨 | 2026-9 |
| 1972 | 64 | 千吨 | 2026-9 |
| 1971 | 66 | 千吨 | 2026-9 |
| 1970 | 99 | 千吨 | 2026-9 |
| 1969 | 110 | 千吨 | 2026-9 |
| 1968 | 123 | 千吨 | 2026-9 |
| 1967 | 119 | 千吨 | 2026-9 |
| 1966 | 64 | 千吨 | 2026-9 |
| 1965 | 17 | 千吨 | 2026-9 |
| 1964 | 0 | 千吨 | 2026-9 |