| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 2003 | 70 | 千吨 | 2026-9 |
| 2002 | 69 | 千吨 | 2026-9 |
| 2001 | 68 | 千吨 | 2026-9 |
| 2000 | 67 | 千吨 | 2026-9 |
| 1999 | 65 | 千吨 | 2026-9 |
| 1998 | 71 | 千吨 | 2026-9 |
| 1997 | 71 | 千吨 | 2026-9 |
| 1996 | 54 | 千吨 | 2026-9 |
| 1995 | 76 | 千吨 | 2026-9 |
| 1994 | 76 | 千吨 | 2026-9 |
| 1993 | 76 | 千吨 | 2026-9 |
| 1992 | 75 | 千吨 | 2026-9 |
| 1991 | 88 | 千吨 | 2026-9 |
| 1990 | 96 | 千吨 | 2026-9 |
| 1989 | 90 | 千吨 | 2026-9 |
| 1988 | 88 | 千吨 | 2026-9 |
| 1987 | 81 | 千吨 | 2026-9 |
| 1986 | 79 | 千吨 | 2026-9 |
| 1985 | 77 | 千吨 | 2026-9 |
| 1984 | 71 | 千吨 | 2026-9 |
| 1983 | 39 | 千吨 | 2026-9 |
| 1982 | 38 | 千吨 | 2026-9 |
| 1981 | 40 | 千吨 | 2026-9 |
| 1980 | 34 | 千吨 | 2026-9 |
| 1979 | 35 | 千吨 | 2026-9 |
| 1978 | 35 | 千吨 | 2026-9 |
| 1977 | 34 | 千吨 | 2026-9 |
| 1976 | 31 | 千吨 | 2026-9 |
| 1975 | 32 | 千吨 | 2026-9 |
| 1974 | 26 | 千吨 | 2026-9 |
| 1973 | 25 | 千吨 | 2026-9 |
| 1972 | 24 | 千吨 | 2026-9 |
| 1971 | 28 | 千吨 | 2026-9 |
| 1970 | 27 | 千吨 | 2026-9 |
| 1969 | 31 | 千吨 | 2026-9 |
| 1968 | 33 | 千吨 | 2026-9 |
| 1967 | 26 | 千吨 | 2026-9 |
| 1966 | 25 | 千吨 | 2026-9 |
| 1965 | 26 | 千吨 | 2026-9 |
| 1964 | 28 | 千吨 | 2026-9 |