| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1996 | 76 | 千吨 | 2026-9 |
| 1995 | 78 | 千吨 | 2026-9 |
| 1994 | 78 | 千吨 | 2026-9 |
| 1993 | 78 | 千吨 | 2026-9 |
| 1992 | 77 | 千吨 | 2026-9 |
| 1991 | 87 | 千吨 | 2026-9 |
| 1990 | 96 | 千吨 | 2026-9 |
| 1989 | 107 | 千吨 | 2026-9 |
| 1988 | 116 | 千吨 | 2026-9 |
| 1987 | 122 | 千吨 | 2026-9 |
| 1986 | 122 | 千吨 | 2026-9 |
| 1985 | 116 | 千吨 | 2026-9 |
| 1984 | 124 | 千吨 | 2026-9 |
| 1983 | 129 | 千吨 | 2026-9 |
| 1982 | 127 | 千吨 | 2026-9 |
| 1981 | 127 | 千吨 | 2026-9 |
| 1980 | 125 | 千吨 | 2026-9 |
| 1979 | 139 | 千吨 | 2026-9 |
| 1978 | 140 | 千吨 | 2026-9 |
| 1977 | 133 | 千吨 | 2026-9 |
| 1976 | 133 | 千吨 | 2026-9 |
| 1975 | 146 | 千吨 | 2026-9 |
| 1974 | 144 | 千吨 | 2026-9 |
| 1973 | 142 | 千吨 | 2026-9 |
| 1972 | 146 | 千吨 | 2026-9 |
| 1971 | 123 | 千吨 | 2026-9 |
| 1970 | 133 | 千吨 | 2026-9 |
| 1969 | 146 | 千吨 | 2026-9 |
| 1968 | 153 | 千吨 | 2026-9 |
| 1967 | 151 | 千吨 | 2026-9 |
| 1966 | 159 | 千吨 | 2026-9 |
| 1965 | 161 | 千吨 | 2026-9 |
| 1964 | 154 | 千吨 | 2026-9 |