| January | February | March | April | May | June | July | August | September | October | November | December | |
| 1970 |
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| 1971 |
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| 1972 |
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| 1973 |
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| 1974 |
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| 1975 |
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| 1976 |
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| 1977 |
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| 1978 |
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| 1979 |
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