| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1996 | 305 | 千吨 | 2026-9 |
| 1995 | 288 | 千吨 | 2026-9 |
| 1994 | 243 | 千吨 | 2026-9 |
| 1993 | 209 | 千吨 | 2026-9 |
| 1992 | 200 | 千吨 | 2026-9 |
| 1991 | 189 | 千吨 | 2026-9 |
| 1990 | 174 | 千吨 | 2026-9 |
| 1989 | 169 | 千吨 | 2026-9 |
| 1988 | 177 | 千吨 | 2026-9 |
| 1987 | 161 | 千吨 | 2026-9 |
| 1986 | 154 | 千吨 | 2026-9 |
| 1985 | 141 | 千吨 | 2026-9 |
| 1984 | 133 | 千吨 | 2026-9 |
| 1983 | 130 | 千吨 | 2026-9 |
| 1982 | 133 | 千吨 | 2026-9 |
| 1981 | 124 | 千吨 | 2026-9 |
| 1980 | 120 | 千吨 | 2026-9 |
| 1979 | 113 | 千吨 | 2026-9 |
| 1978 | 97 | 千吨 | 2026-9 |
| 1977 | 104 | 千吨 | 2026-9 |
| 1976 | 106 | 千吨 | 2026-9 |
| 1975 | 97 | 千吨 | 2026-9 |
| 1974 | 103 | 千吨 | 2026-9 |
| 1973 | 99 | 千吨 | 2026-9 |
| 1972 | 95 | 千吨 | 2026-9 |
| 1971 | 95 | 千吨 | 2026-9 |
| 1970 | 91 | 千吨 | 2026-9 |
| 1969 | 85 | 千吨 | 2026-9 |
| 1968 | 85 | 千吨 | 2026-9 |
| 1967 | 83 | 千吨 | 2026-9 |
| 1966 | 80 | 千吨 | 2026-9 |
| 1965 | 76 | 千吨 | 2026-9 |
| 1964 | 68 | 千吨 | 2026-9 |