| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1996 | 50 | 千吨 | 2026-9 |
| 1995 | 51 | 千吨 | 2026-9 |
| 1994 | 50 | 千吨 | 2026-9 |
| 1993 | 48 | 千吨 | 2026-9 |
| 1992 | 49 | 千吨 | 2026-9 |
| 1991 | 49 | 千吨 | 2026-9 |
| 1990 | 51 | 千吨 | 2026-9 |
| 1989 | 58 | 千吨 | 2026-9 |
| 1988 | 62 | 千吨 | 2026-9 |
| 1987 | 70 | 千吨 | 2026-9 |
| 1986 | 66 | 千吨 | 2026-9 |
| 1985 | 59 | 千吨 | 2026-9 |
| 1984 | 66 | 千吨 | 2026-9 |
| 1983 | 81 | 千吨 | 2026-9 |
| 1982 | 75 | 千吨 | 2026-9 |
| 1981 | 71 | 千吨 | 2026-9 |
| 1980 | 72 | 千吨 | 2026-9 |
| 1979 | 83 | 千吨 | 2026-9 |
| 1978 | 89 | 千吨 | 2026-9 |
| 1977 | 90 | 千吨 | 2026-9 |
| 1976 | 92 | 千吨 | 2026-9 |
| 1975 | 98 | 千吨 | 2026-9 |
| 1974 | 101 | 千吨 | 2026-9 |
| 1973 | 101 | 千吨 | 2026-9 |
| 1972 | 89 | 千吨 | 2026-9 |
| 1971 | 79 | 千吨 | 2026-9 |
| 1970 | 88 | 千吨 | 2026-9 |
| 1969 | 101 | 千吨 | 2026-9 |
| 1968 | 107 | 千吨 | 2026-9 |
| 1967 | 104 | 千吨 | 2026-9 |
| 1966 | 112 | 千吨 | 2026-9 |
| 1965 | 115 | 千吨 | 2026-9 |
| 1964 | 104 | 千吨 | 2026-9 |