| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1996 | 56 | 千吨 | 2026-9 |
| 1995 | 54 | 千吨 | 2026-9 |
| 1994 | 59 | 千吨 | 2026-9 |
| 1993 | 59 | 千吨 | 2026-9 |
| 1992 | 62 | 千吨 | 2026-9 |
| 1991 | 71 | 千吨 | 2026-9 |
| 1990 | 93 | 千吨 | 2026-9 |
| 1989 | 92 | 千吨 | 2026-9 |
| 1988 | 94 | 千吨 | 2026-9 |
| 1987 | 96 | 千吨 | 2026-9 |
| 1986 | 112 | 千吨 | 2026-9 |
| 1985 | 110 | 千吨 | 2026-9 |
| 1984 | 104 | 千吨 | 2026-9 |
| 1983 | 131 | 千吨 | 2026-9 |
| 1982 | 121 | 千吨 | 2026-9 |
| 1981 | 108 | 千吨 | 2026-9 |
| 1980 | 113 | 千吨 | 2026-9 |
| 1979 | 131 | 千吨 | 2026-9 |
| 1978 | 140 | 千吨 | 2026-9 |
| 1977 | 131 | 千吨 | 2026-9 |
| 1976 | 139 | 千吨 | 2026-9 |
| 1975 | 139 | 千吨 | 2026-9 |
| 1974 | 137 | 千吨 | 2026-9 |
| 1973 | 146 | 千吨 | 2026-9 |
| 1972 | 136 | 千吨 | 2026-9 |
| 1971 | 124 | 千吨 | 2026-9 |
| 1970 | 131 | 千吨 | 2026-9 |
| 1969 | 145 | 千吨 | 2026-9 |
| 1968 | 160 | 千吨 | 2026-9 |
| 1967 | 154 | 千吨 | 2026-9 |
| 1966 | 160 | 千吨 | 2026-9 |
| 1965 | 166 | 千吨 | 2026-9 |
| 1964 | 156 | 千吨 | 2026-9 |