| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1998 | 133 | 千吨 | 2026-9 |
| 1997 | 139 | 千吨 | 2026-9 |
| 1996 | 127 | 千吨 | 2026-9 |
| 1995 | 130 | 千吨 | 2026-9 |
| 1994 | 122 | 千吨 | 2026-9 |
| 1993 | 160 | 千吨 | 2026-9 |
| 1992 | 167 | 千吨 | 2026-9 |
| 1991 | 208 | 千吨 | 2026-9 |
| 1990 | 226 | 千吨 | 2026-9 |
| 1989 | 235 | 千吨 | 2026-9 |
| 1988 | 226 | 千吨 | 2026-9 |
| 1987 | 227 | 千吨 | 2026-9 |
| 1986 | 231 | 千吨 | 2026-9 |
| 1985 | 218 | 千吨 | 2026-9 |
| 1984 | 205 | 千吨 | 2026-9 |
| 1983 | 183 | 千吨 | 2026-9 |
| 1982 | 132 | 千吨 | 2026-9 |
| 1981 | 118 | 千吨 | 2026-9 |
| 1980 | 104 | 千吨 | 2026-9 |
| 1979 | 96 | 千吨 | 2026-9 |
| 1978 | 104 | 千吨 | 2026-9 |
| 1977 | 105 | 千吨 | 2026-9 |
| 1976 | 126 | 千吨 | 2026-9 |
| 1975 | 110 | 千吨 | 2026-9 |
| 1974 | 80 | 千吨 | 2026-9 |
| 1973 | 56 | 千吨 | 2026-9 |
| 1972 | 40 | 千吨 | 2026-9 |
| 1971 | 25 | 千吨 | 2026-9 |
| 1970 | 20 | 千吨 | 2026-9 |
| 1969 | 20 | 千吨 | 2026-9 |
| 1968 | 20 | 千吨 | 2026-9 |
| 1967 | 17 | 千吨 | 2026-9 |
| 1966 | 13 | 千吨 | 2026-9 |
| 1965 | 9 | 千吨 | 2026-9 |
| 1964 | 7 | 千吨 | 2026-9 |