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Jahr | Ertrag (![]() |
Clusterzahl (![]() |
1971 | 5.6 | 116.37 |
1973 | 3.2 | 82.77 |
1974 | 4.5 | 110.68 |
1975 | 4.2 | 97.50 |
1976 | 5.2 | 115.88 |
1977 | 2.7 | 80.19 |
1978 | 4.8 | 125.24 |
1979 | 4.9 | 116.15 |
1980 | 4.7 | 117.36 |
1981 | 4.1 | 93.31 |
1982 | 4.4 | 107.46 |
1983 | 5.4 | 122.30 |