| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 2007 | 640 | 千吨 | 2026-9 |
| 2006 | 630 | 千吨 | 2026-9 |
| 2005 | 640 | 千吨 | 2026-9 |
| 2004 | 732 | 千吨 | 2026-9 |
| 2003 | 690 | 千吨 | 2026-9 |
| 2002 | 684 | 千吨 | 2026-9 |
| 2001 | 681 | 千吨 | 2026-9 |
| 2000 | 696 | 千吨 | 2026-9 |
| 1999 | 701 | 千吨 | 2026-9 |
| 1998 | 780 | 千吨 | 2026-9 |
| 1997 | 790 | 千吨 | 2026-9 |
| 1996 | 800 | 千吨 | 2026-9 |
| 1995 | 830 | 千吨 | 2026-9 |
| 1994 | 435 | 千吨 | 2026-9 |
| 1993 | 210 | 千吨 | 2026-9 |
| 1992 | 336 | 千吨 | 2026-9 |
| 1991 | 300 | 千吨 | 2026-9 |
| 1990 | 350 | 千吨 | 2026-9 |
| 1989 | 320 | 千吨 | 2026-9 |
| 1988 | 360 | 千吨 | 2026-9 |
| 1987 | 350 | 千吨 | 2026-9 |
| 1986 | 325 | 千吨 | 2026-9 |
| 1985 | 300 | 千吨 | 2026-9 |
| 1984 | 280 | 千吨 | 2026-9 |
| 1983 | 270 | 千吨 | 2026-9 |
| 1982 | 260 | 千吨 | 2026-9 |
| 1981 | 287 | 千吨 | 2026-9 |
| 1980 | 331 | 千吨 | 2026-9 |
| 1979 | 378 | 千吨 | 2026-9 |
| 1978 | 376 | 千吨 | 2026-9 |
| 1977 | 364 | 千吨 | 2026-9 |
| 1976 | 330 | 千吨 | 2026-9 |
| 1975 | 300 | 千吨 | 2026-9 |
| 1974 | 300 | 千吨 | 2026-9 |
| 1973 | 300 | 千吨 | 2026-9 |
| 1972 | 300 | 千吨 | 2026-9 |
| 1971 | 300 | 千吨 | 2026-9 |
| 1970 | 300 | 千吨 | 2026-9 |
| 1969 | 300 | 千吨 | 2026-9 |
| 1968 | 300 | 千吨 | 2026-9 |
| 1967 | 300 | 千吨 | 2026-9 |
| 1966 | 300 | 千吨 | 2026-9 |
| 1965 | 300 | 千吨 | 2026-9 |
| 1964 | 0 | 千吨 | 2026-9 |