| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1996 | 173 | 千吨 | 2026-9 |
| 1995 | 169 | 千吨 | 2026-9 |
| 1994 | 167 | 千吨 | 2026-9 |
| 1993 | 156 | 千吨 | 2026-9 |
| 1992 | 144 | 千吨 | 2026-9 |
| 1991 | 130 | 千吨 | 2026-9 |
| 1990 | 125 | 千吨 | 2026-9 |
| 1989 | 116 | 千吨 | 2026-9 |
| 1988 | 109 | 千吨 | 2026-9 |
| 1987 | 107 | 千吨 | 2026-9 |
| 1986 | 104 | 千吨 | 2026-9 |
| 1985 | 106 | 千吨 | 2026-9 |
| 1984 | 98 | 千吨 | 2026-9 |
| 1983 | 99 | 千吨 | 2026-9 |
| 1982 | 99 | 千吨 | 2026-9 |
| 1981 | 93 | 千吨 | 2026-9 |
| 1980 | 85 | 千吨 | 2026-9 |
| 1979 | 88 | 千吨 | 2026-9 |
| 1978 | 85 | 千吨 | 2026-9 |
| 1977 | 89 | 千吨 | 2026-9 |
| 1976 | 84 | 千吨 | 2026-9 |
| 1975 | 83 | 千吨 | 2026-9 |
| 1974 | 86 | 千吨 | 2026-9 |
| 1973 | 80 | 千吨 | 2026-9 |
| 1972 | 73 | 千吨 | 2026-9 |
| 1971 | 69 | 千吨 | 2026-9 |
| 1970 | 66 | 千吨 | 2026-9 |
| 1969 | 57 | 千吨 | 2026-9 |
| 1968 | 52 | 千吨 | 2026-9 |
| 1967 | 55 | 千吨 | 2026-9 |
| 1966 | 54 | 千吨 | 2026-9 |
| 1965 | 58 | 千吨 | 2026-9 |
| 1964 | 66 | 千吨 | 2026-9 |