| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1996 | 252 | 千吨 | 2026-9 |
| 1995 | 234 | 千吨 | 2026-9 |
| 1994 | 263 | 千吨 | 2026-9 |
| 1993 | 220 | 千吨 | 2026-9 |
| 1992 | 203 | 千吨 | 2026-9 |
| 1991 | 194 | 千吨 | 2026-9 |
| 1990 | 171 | 千吨 | 2026-9 |
| 1989 | 157 | 千吨 | 2026-9 |
| 1988 | 140 | 千吨 | 2026-9 |
| 1987 | 141 | 千吨 | 2026-9 |
| 1986 | 134 | 千吨 | 2026-9 |
| 1985 | 127 | 千吨 | 2026-9 |
| 1984 | 126 | 千吨 | 2026-9 |
| 1983 | 134 | 千吨 | 2026-9 |
| 1982 | 126 | 千吨 | 2026-9 |
| 1981 | 126 | 千吨 | 2026-9 |
| 1980 | 115 | 千吨 | 2026-9 |
| 1979 | 119 | 千吨 | 2026-9 |
| 1978 | 116 | 千吨 | 2026-9 |
| 1977 | 104 | 千吨 | 2026-9 |
| 1976 | 100 | 千吨 | 2026-9 |
| 1975 | 100 | 千吨 | 2026-9 |
| 1974 | 104 | 千吨 | 2026-9 |
| 1973 | 113 | 千吨 | 2026-9 |
| 1972 | 99 | 千吨 | 2026-9 |
| 1971 | 82 | 千吨 | 2026-9 |
| 1970 | 27 | 千吨 | 2026-9 |
| 1969 | 23 | 千吨 | 2026-9 |
| 1968 | 20 | 千吨 | 2026-9 |
| 1967 | 18 | 千吨 | 2026-9 |
| 1966 | 18 | 千吨 | 2026-9 |
| 1965 | 20 | 千吨 | 2026-9 |
| 1964 | 14 | 千吨 | 2026-9 |