| 年度 | 数值 | 单位 | 发布日期 |
| 1998 | 1744 | 千吨 | 2026-9 |
| 1997 | 1638 | 千吨 | 2026-9 |
| 1996 | 1820 | 千吨 | 2026-9 |
| 1995 | 1671 | 千吨 | 2026-9 |
| 1994 | 1515 | 千吨 | 2026-9 |
| 1993 | 1626 | 千吨 | 2026-9 |
| 1992 | 2127 | 千吨 | 2026-9 |
| 1991 | 2068 | 千吨 | 2026-9 |
| 1990 | 1973 | 千吨 | 2026-9 |
| 1989 | 2014 | 千吨 | 2026-9 |
| 1988 | 1976 | 千吨 | 2026-9 |
| 1987 | 1924 | 千吨 | 2026-9 |
| 1986 | 1914 | 千吨 | 2026-9 |
| 1985 | 1547 | 千吨 | 2026-9 |
| 1984 | 1399 | 千吨 | 2026-9 |
| 1983 | 1494 | 千吨 | 2026-9 |
| 1982 | 1618 | 千吨 | 2026-9 |
| 1981 | 1481 | 千吨 | 2026-9 |
| 1980 | 2007 | 千吨 | 2026-9 |
| 1979 | 1863 | 千吨 | 2026-9 |
| 1978 | 1867 | 千吨 | 2026-9 |
| 1977 | 1622 | 千吨 | 2026-9 |
| 1976 | 1610 | 千吨 | 2026-9 |
| 1975 | 1866 | 千吨 | 2026-9 |
| 1974 | 1952 | 千吨 | 2026-9 |
| 1973 | 1872 | 千吨 | 2026-9 |
| 1972 | 1147 | 千吨 | 2026-9 |
| 1971 | 1056 | 千吨 | 2026-9 |
| 1970 | 922 | 千吨 | 2026-9 |
| 1969 | 937 | 千吨 | 2026-9 |
| 1968 | 961 | 千吨 | 2026-9 |
| 1967 | 939 | 千吨 | 2026-9 |
| 1966 | 955 | 千吨 | 2026-9 |
| 1965 | 930 | 千吨 | 2026-9 |
| 1964 | 778 | 千吨 | 2026-9 |
| 1963 | 797 | 千吨 | 2026-9 |
| 1962 | 857 | 千吨 | 2026-9 |
| 1961 | 871 | 千吨 | 2026-9 |
| 1960 | 793 | 千吨 | 2026-9 |