| 年度 | 数值 | 单位 | 发布日期 |
| 1996 | 178 | 千吨 | 2026-9 |
| 1995 | 195 | 千吨 | 2026-9 |
| 1994 | 194 | 千吨 | 2026-9 |
| 1993 | 207 | 千吨 | 2026-9 |
| 1992 | 196 | 千吨 | 2026-9 |
| 1991 | 218 | 千吨 | 2026-9 |
| 1990 | 171 | 千吨 | 2026-9 |
| 1989 | 195 | 千吨 | 2026-9 |
| 1988 | 266 | 千吨 | 2026-9 |
| 1987 | 257 | 千吨 | 2026-9 |
| 1986 | 227 | 千吨 | 2026-9 |
| 1985 | 250 | 千吨 | 2026-9 |
| 1984 | 240 | 千吨 | 2026-9 |
| 1983 | 204 | 千吨 | 2026-9 |
| 1982 | 258 | 千吨 | 2026-9 |
| 1981 | 239 | 千吨 | 2026-9 |
| 1980 | 249 | 千吨 | 2026-9 |
| 1979 | 219 | 千吨 | 2026-9 |
| 1978 | 199 | 千吨 | 2026-9 |
| 1977 | 182 | 千吨 | 2026-9 |
| 1976 | 177 | 千吨 | 2026-9 |
| 1975 | 167 | 千吨 | 2026-9 |
| 1974 | 177 | 千吨 | 2026-9 |
| 1973 | 205 | 千吨 | 2026-9 |
| 1972 | 113 | 千吨 | 2026-9 |
| 1971 | 122 | 千吨 | 2026-9 |
| 1970 | 147 | 千吨 | 2026-9 |
| 1969 | 118 | 千吨 | 2026-9 |
| 1968 | 120 | 千吨 | 2026-9 |
| 1967 | 119 | 千吨 | 2026-9 |
| 1966 | 110 | 千吨 | 2026-9 |
| 1965 | 95 | 千吨 | 2026-9 |
| 1964 | 103 | 千吨 | 2026-9 |