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| 1968 | 1969a | 1969b | 1970* | 1971a |
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| 1971b* | 1971c | 1972 | 1974 | 1975a |
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| 1975b* | 1975c* | 1976a | 1976b* | 1977a |
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| 1977b* | 1977c | 1978a* | 1978b* | 1978c* |
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| 1978d* | 1978e* | 1978f | 1979 | 1980* |
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| 1982a | 1982b | 1982c | 1982d* | 1983 |
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| 1984 | 1985 | 1986a | 1986b | 1987 |
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| 1988 | 1989* | 2019 | ||