| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1998 | 98 | 千吨 | 2026-9 |
| 1997 | 92 | 千吨 | 2026-9 |
| 1996 | 91 | 千吨 | 2026-9 |
| 1995 | 110 | 千吨 | 2026-9 |
| 1994 | 115 | 千吨 | 2026-9 |
| 1993 | 142 | 千吨 | 2026-9 |
| 1992 | 117 | 千吨 | 2026-9 |
| 1991 | 120 | 千吨 | 2026-9 |
| 1990 | 131 | 千吨 | 2026-9 |
| 1989 | 133 | 千吨 | 2026-9 |
| 1988 | 119 | 千吨 | 2026-9 |
| 1987 | 120 | 千吨 | 2026-9 |
| 1986 | 165 | 千吨 | 2026-9 |
| 1985 | 149 | 千吨 | 2026-9 |
| 1984 | 147 | 千吨 | 2026-9 |
| 1983 | 147 | 千吨 | 2026-9 |
| 1982 | 145 | 千吨 | 2026-9 |
| 1981 | 137 | 千吨 | 2026-9 |
| 1980 | 128 | 千吨 | 2026-9 |
| 1979 | 133 | 千吨 | 2026-9 |
| 1978 | 133 | 千吨 | 2026-9 |
| 1977 | 142 | 千吨 | 2026-9 |
| 1976 | 126 | 千吨 | 2026-9 |
| 1975 | 127 | 千吨 | 2026-9 |
| 1974 | 108 | 千吨 | 2026-9 |
| 1973 | 111 | 千吨 | 2026-9 |
| 1972 | 89 | 千吨 | 2026-9 |
| 1971 | 87 | 千吨 | 2026-9 |
| 1970 | 96 | 千吨 | 2026-9 |
| 1969 | 95 | 千吨 | 2026-9 |
| 1968 | 105 | 千吨 | 2026-9 |
| 1967 | 99 | 千吨 | 2026-9 |
| 1966 | 83 | 千吨 | 2026-9 |
| 1965 | 69 | 千吨 | 2026-9 |
| 1964 | 67 | 千吨 | 2026-9 |
| 1963 | 71 | 千吨 | 2026-9 |
| 1962 | 64 | 千吨 | 2026-9 |
| 1961 | 58 | 千吨 | 2026-9 |
| 1960 | 41 | 千吨 | 2026-9 |