| 年度 | 数值 | 单位 | 发布日期 |
| 1996 | 1414 | 千吨 | 2026-9 |
| 1995 | 1394 | 千吨 | 2026-9 |
| 1994 | 1398 | 千吨 | 2026-9 |
| 1993 | 1412 | 千吨 | 2026-9 |
| 1992 | 1424 | 千吨 | 2026-9 |
| 1991 | 1184 | 千吨 | 2026-9 |
| 1990 | 1217 | 千吨 | 2026-9 |
| 1989 | 1282 | 千吨 | 2026-9 |
| 1988 | 1351 | 千吨 | 2026-9 |
| 1987 | 1363 | 千吨 | 2026-9 |
| 1986 | 1371 | 千吨 | 2026-9 |
| 1985 | 1351 | 千吨 | 2026-9 |
| 1984 | 1349 | 千吨 | 2026-9 |
| 1983 | 1340 | 千吨 | 2026-9 |
| 1982 | 1390 | 千吨 | 2026-9 |
| 1981 | 1386 | 千吨 | 2026-9 |
| 1980 | 1347 | 千吨 | 2026-9 |
| 1979 | 1317 | 千吨 | 2026-9 |
| 1978 | 1310 | 千吨 | 2026-9 |
| 1977 | 1302 | 千吨 | 2026-9 |
| 1976 | 1320 | 千吨 | 2026-9 |
| 1975 | 1314 | 千吨 | 2026-9 |
| 1974 | 1269 | 千吨 | 2026-9 |
| 1973 | 1248 | 千吨 | 2026-9 |
| 1972 | 1256 | 千吨 | 2026-9 |
| 1971 | 1303 | 千吨 | 2026-9 |
| 1970 | 1322 | 千吨 | 2026-9 |
| 1969 | 1316 | 千吨 | 2026-9 |
| 1968 | 1342 | 千吨 | 2026-9 |
| 1967 | 1348 | 千吨 | 2026-9 |
| 1966 | 1366 | 千吨 | 2026-9 |
| 1965 | 1364 | 千吨 | 2026-9 |
| 1964 | 1368 | 千吨 | 2026-9 |