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| 1964 | 1969 | 1971 | 1973 | 1975a |
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| 1975b** | 1976 | 1977a | 1977b | 1978 |
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| 1979 | 1981a | 1981b | 1982 | 1983** |
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| 1984 | 1985 | 1987a | 1987b | 1988 |
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| 1989a | 1989b* | 1990 | ||