| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1996 | 245 | 千吨 | 2026-9 |
| 1995 | 236 | 千吨 | 2026-9 |
| 1994 | 232 | 千吨 | 2026-9 |
| 1993 | 235 | 千吨 | 2026-9 |
| 1992 | 200 | 千吨 | 2026-9 |
| 1991 | 177 | 千吨 | 2026-9 |
| 1990 | 167 | 千吨 | 2026-9 |
| 1989 | 150 | 千吨 | 2026-9 |
| 1988 | 143 | 千吨 | 2026-9 |
| 1987 | 141 | 千吨 | 2026-9 |
| 1986 | 137 | 千吨 | 2026-9 |
| 1985 | 147 | 千吨 | 2026-9 |
| 1984 | 168 | 千吨 | 2026-9 |
| 1983 | 151 | 千吨 | 2026-9 |
| 1982 | 145 | 千吨 | 2026-9 |
| 1981 | 141 | 千吨 | 2026-9 |
| 1980 | 139 | 千吨 | 2026-9 |
| 1979 | 131 | 千吨 | 2026-9 |
| 1978 | 125 | 千吨 | 2026-9 |
| 1977 | 119 | 千吨 | 2026-9 |
| 1976 | 109 | 千吨 | 2026-9 |
| 1975 | 103 | 千吨 | 2026-9 |
| 1974 | 98 | 千吨 | 2026-9 |
| 1973 | 94 | 千吨 | 2026-9 |
| 1972 | 91 | 千吨 | 2026-9 |
| 1971 | 91 | 千吨 | 2026-9 |
| 1970 | 84 | 千吨 | 2026-9 |
| 1969 | 83 | 千吨 | 2026-9 |
| 1968 | 78 | 千吨 | 2026-9 |
| 1967 | 78 | 千吨 | 2026-9 |
| 1966 | 79 | 千吨 | 2026-9 |
| 1965 | 70 | 千吨 | 2026-9 |
| 1964 | 64 | 千吨 | 2026-9 |