| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1996 | 29 | 千吨 | 2026-9 |
| 1995 | 32 | 千吨 | 2026-9 |
| 1994 | 38 | 千吨 | 2026-9 |
| 1993 | 58 | 千吨 | 2026-9 |
| 1992 | 50 | 千吨 | 2026-9 |
| 1991 | 52 | 千吨 | 2026-9 |
| 1990 | 70 | 千吨 | 2026-9 |
| 1989 | 83 | 千吨 | 2026-9 |
| 1988 | 87 | 千吨 | 2026-9 |
| 1987 | 98 | 千吨 | 2026-9 |
| 1986 | 172 | 千吨 | 2026-9 |
| 1985 | 153 | 千吨 | 2026-9 |
| 1984 | 158 | 千吨 | 2026-9 |
| 1983 | 247 | 千吨 | 2026-9 |
| 1982 | 199 | 千吨 | 2026-9 |
| 1981 | 165 | 千吨 | 2026-9 |
| 1980 | 155 | 千吨 | 2026-9 |
| 1979 | 179 | 千吨 | 2026-9 |
| 1978 | 202 | 千吨 | 2026-9 |
| 1977 | 138 | 千吨 | 2026-9 |
| 1976 | 169 | 千吨 | 2026-9 |
| 1975 | 186 | 千吨 | 2026-9 |
| 1974 | 140 | 千吨 | 2026-9 |
| 1973 | 128 | 千吨 | 2026-9 |
| 1972 | 118 | 千吨 | 2026-9 |
| 1971 | 86 | 千吨 | 2026-9 |
| 1970 | 96 | 千吨 | 2026-9 |
| 1969 | 88 | 千吨 | 2026-9 |
| 1968 | 104 | 千吨 | 2026-9 |
| 1967 | 65 | 千吨 | 2026-9 |
| 1966 | 69 | 千吨 | 2026-9 |
| 1965 | 69 | 千吨 | 2026-9 |
| 1964 | 56 | 千吨 | 2026-9 |