| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1998 | 70 | 千吨 | 2026-9 |
| 1997 | 106 | 千吨 | 2026-9 |
| 1996 | 112 | 千吨 | 2026-9 |
| 1995 | 140 | 千吨 | 2026-9 |
| 1994 | 117 | 千吨 | 2026-9 |
| 1993 | 145 | 千吨 | 2026-9 |
| 1992 | 175 | 千吨 | 2026-9 |
| 1991 | 260 | 千吨 | 2026-9 |
| 1990 | 400 | 千吨 | 2026-9 |
| 1989 | 290 | 千吨 | 2026-9 |
| 1988 | 300 | 千吨 | 2026-9 |
| 1987 | 330 | 千吨 | 2026-9 |
| 1986 | 365 | 千吨 | 2026-9 |
| 1985 | 355 | 千吨 | 2026-9 |
| 1984 | 350 | 千吨 | 2026-9 |
| 1983 | 330 | 千吨 | 2026-9 |
| 1982 | 350 | 千吨 | 2026-9 |
| 1981 | 330 | 千吨 | 2026-9 |
| 1980 | 318 | 千吨 | 2026-9 |
| 1979 | 315 | 千吨 | 2026-9 |
| 1978 | 315 | 千吨 | 2026-9 |
| 1977 | 320 | 千吨 | 2026-9 |
| 1976 | 308 | 千吨 | 2026-9 |
| 1975 | 280 | 千吨 | 2026-9 |
| 1974 | 212 | 千吨 | 2026-9 |
| 1973 | 194 | 千吨 | 2026-9 |
| 1972 | 171 | 千吨 | 2026-9 |
| 1971 | 120 | 千吨 | 2026-9 |
| 1970 | 108 | 千吨 | 2026-9 |
| 1969 | 101 | 千吨 | 2026-9 |