| Year | Huri | Headwaters | Peat | Others |
| 1969/70 | 513 | 260 | 143 | 110 |
| 1970/71 | 895 | 302 | 414 | 179 |
| 1971/72 | 476 | 233 | 46 | 197 |
| 1972/73 | 261 | 168 | 12 | 81 |
| 1973/74 | 1363 | 306 | 987 | 70 |
| 1974/75 | 361 | 240 | 29 | 92 |
| 1975/76 | 446 | 308 | 24 | 114 |
| 1976/77 | 520 | 307 | 55 | 158 |
| 1977/78 | 555 | 354 | 129 | 72 |
| 1978/79 | 239 | 170 | 1 | 68 |
| 1979/80 | 1188 | 418 | 743 | 128 |
| 1980/81 | 1233 | 401 | 698 | 134 |
| Mean(SD) | 671 (395) | 289 (80) | 273 (348) | 117 (44) |