| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1998 | 166 | 千吨 | 2026-9 |
| 1997 | 171 | 千吨 | 2026-9 |
| 1996 | 134 | 千吨 | 2026-9 |
| 1995 | 125 | 千吨 | 2026-9 |
| 1994 | 130 | 千吨 | 2026-9 |
| 1993 | 121 | 千吨 | 2026-9 |
| 1992 | 122 | 千吨 | 2026-9 |
| 1991 | 124 | 千吨 | 2026-9 |
| 1990 | 126 | 千吨 | 2026-9 |
| 1989 | 135 | 千吨 | 2026-9 |
| 1988 | 136 | 千吨 | 2026-9 |
| 1987 | 129 | 千吨 | 2026-9 |
| 1986 | 124 | 千吨 | 2026-9 |
| 1985 | 121 | 千吨 | 2026-9 |
| 1984 | 121 | 千吨 | 2026-9 |
| 1983 | 120 | 千吨 | 2026-9 |
| 1982 | 97 | 千吨 | 2026-9 |
| 1981 | 90 | 千吨 | 2026-9 |
| 1980 | 103 | 千吨 | 2026-9 |
| 1979 | 98 | 千吨 | 2026-9 |
| 1978 | 91 | 千吨 | 2026-9 |
| 1977 | 95 | 千吨 | 2026-9 |
| 1976 | 90 | 千吨 | 2026-9 |
| 1975 | 95 | 千吨 | 2026-9 |
| 1974 | 69 | 千吨 | 2026-9 |
| 1973 | 54 | 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 |