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| 1/1973 | 2/1973 | 3/1973 | 4/1973 | 5/1973 | 6/1973 |
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| 7/1973 | 8/1973 | ||||
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| 1/1974 | 2/1974 | 3/1974 | 4/1974 | 5/1974 | 6/1974 |
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| 7/1974 | 8/1974 | 9/1974 | 10/1974 | ||
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| 1/1975 | 2/1975 | 3/1975 | 4/1975 | 5/1975 | 6/1975 |
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| 7/1975 | 8/1975 | 9/1975 | 10/1975 | ||
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| 1/1976 | 2/1976 | 3/1976 | 4/1976 | 5/1976 | 6/1976 |
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| 7/1976 | 8/1976 | 9/1976 | 10/1976 | ||
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| 1/1977 | 2/1977 | 3/1977 | 4/1977 | 5/1977 | 6/1977 |
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| 7/1977 | 8/1977 | 9/1977 | 10/1977 |