| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1998 | 122 | 千吨 | 2026-9 |
| 1997 | 120 | 千吨 | 2026-9 |
| 1996 | 120 | 千吨 | 2026-9 |
| 1995 | 128 | 千吨 | 2026-9 |
| 1994 | 112 | 千吨 | 2026-9 |
| 1993 | 156 | 千吨 | 2026-9 |
| 1992 | 139 | 千吨 | 2026-9 |
| 1991 | 145 | 千吨 | 2026-9 |
| 1990 | 175 | 千吨 | 2026-9 |
| 1989 | 174 | 千吨 | 2026-9 |
| 1988 | 159 | 千吨 | 2026-9 |
| 1987 | 156 | 千吨 | 2026-9 |
| 1986 | 161 | 千吨 | 2026-9 |
| 1985 | 158 | 千吨 | 2026-9 |
| 1984 | 166 | 千吨 | 2026-9 |
| 1983 | 146 | 千吨 | 2026-9 |
| 1982 | 105 | 千吨 | 2026-9 |
| 1981 | 86 | 千吨 | 2026-9 |
| 1980 | 94 | 千吨 | 2026-9 |
| 1979 | 85 | 千吨 | 2026-9 |
| 1978 | 94 | 千吨 | 2026-9 |
| 1977 | 97 | 千吨 | 2026-9 |
| 1976 | 118 | 千吨 | 2026-9 |
| 1975 | 104 | 千吨 | 2026-9 |
| 1974 | 79 | 千吨 | 2026-9 |
| 1973 | 56 | 千吨 | 2026-9 |
| 1972 | 40 | 千吨 | 2026-9 |
| 1971 | 25 | 千吨 | 2026-9 |
| 1970 | 20 | 千吨 | 2026-9 |
| 1969 | 20 | 千吨 | 2026-9 |
| 1968 | 20 | 千吨 | 2026-9 |
| 1967 | 17 | 千吨 | 2026-9 |
| 1966 | 13 | 千吨 | 2026-9 |
| 1965 | 9 | 千吨 | 2026-9 |
| 1964 | 7 | 千吨 | 2026-9 |