| Covers listed | |
| 1965: | January, February, March, May, |
| 1974: | August, |
| 1976: | June, |
| 1977: | January, December, |
| 1978: | September, |
| 1979: | , |
| 1980: | January, |
| 1981: | March, |
| 1982: | January, March, June, |
| 1983: | May, July, , |
| 1984: | July, August, |
| 1985: | January, February, |
| 1986: | February, |
| 1989: | September, December, |
| 1990: | June, |
