| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1998 | 176 | 千吨 | 2026-9 |
| 1997 | 181 | 千吨 | 2026-9 |
| 1996 | 155 | 千吨 | 2026-9 |
| 1995 | 145 | 千吨 | 2026-9 |
| 1994 | 150 | 千吨 | 2026-9 |
| 1993 | 141 | 千吨 | 2026-9 |
| 1992 | 138 | 千吨 | 2026-9 |
| 1991 | 144 | 千吨 | 2026-9 |
| 1990 | 146 | 千吨 | 2026-9 |
| 1989 | 155 | 千吨 | 2026-9 |
| 1988 | 156 | 千吨 | 2026-9 |
| 1987 | 141 | 千吨 | 2026-9 |
| 1986 | 138 | 千吨 | 2026-9 |
| 1985 | 139 | 千吨 | 2026-9 |
| 1984 | 138 | 千吨 | 2026-9 |
| 1983 | 139 | 千吨 | 2026-9 |
| 1982 | 119 | 千吨 | 2026-9 |
| 1981 | 94 | 千吨 | 2026-9 |
| 1980 | 105 | 千吨 | 2026-9 |
| 1979 | 107 | 千吨 | 2026-9 |
| 1978 | 101 | 千吨 | 2026-9 |
| 1977 | 102 | 千吨 | 2026-9 |
| 1976 | 97 | 千吨 | 2026-9 |
| 1975 | 98 | 千吨 | 2026-9 |
| 1974 | 84 | 千吨 | 2026-9 |
| 1973 | 64 | 千吨 | 2026-9 |
| 1972 | 54 | 千吨 | 2026-9 |
| 1971 | 48 | 千吨 | 2026-9 |
| 1970 | 44 | 千吨 | 2026-9 |
| 1969 | 41 | 千吨 | 2026-9 |
| 1968 | 36 | 千吨 | 2026-9 |
| 1967 | 31 | 千吨 | 2026-9 |
| 1966 | 210 | 千吨 | 2026-9 |
| 1965 | 176 | 千吨 | 2026-9 |
| 1964 | 165 | 千吨 | 2026-9 |