| Covers listed |
|
| 1978: | #1 / , #2 / , #3 / , #4 / , #5 / , #6 / , #7 / , |
| 1979: | #1 / , #2 / , #3 / , #4 / , #5 / , #6 / , #7 / , #8 / , #9 / , #10 / , #11 / , #12 / , |
| 1980: | #1 / , #2 / , #3 / , #4 / , #5 / , #6 / , #7 / , #8 / , #9 / , #10 / , #11 / , #12 / , |
| 1981: | #1 / , #2 / , #3 / , #4 / , #5 / , #6 / January, #7 / , #8 / January, #9 / , #10 / January, #11 / January, #12 / , |
| 1982: | #1 / , #2 / , #3 / , #4 / , #5 / , #6 / , #7 / , #8 / , #9 / , #10 / , #11 / , #12 / , |
| 1983: | #1 / , #2 / , #3 / , #4 / , #5 / , #6 / , #7 / , #8 / , #9 / , #10 / , #11 / , #12 / , |
| 1984: | #1 / , #2 / , #3 / , #4 / , #5 / , #6 / , #7 / , #8 / , #9 / , #10 / , #11 / , #12 / , |
| 1985: | #1 / , #2 / January, #3 / , #4 / January, #5 / , #6 / , #7 / , #8 / , #9 / , #10 / , #11 / , #12 / , |
| 1986: | #1 / , #2 / , #3 / , #4 / January, #5 / January, #6 / January, #7 / , #8 / , #9 / , #10 / , #11 / , #12 / , |
| 1987: | #1 / , #2 / , #3 / , #4 / , #5 / , #6 / , #7 / , #8 / , #9 / , #10 / , #11 / , #12 / , |
| 1988: | #1 / , #2 / , #3 / , #4 / , #5 / , #6 / , #7 / , #8 / , #9 / , #10 / , #11 / , #12 / , #12 / , |
| 1989: | #1 / , #2 / , #3 / , #4 / , #5 / , #6 / , #7 / , #8 / , #9 / , #10 / , #11 / , #12 / , |
| 1990: | #1 / , #2 / , #4 / , #5 / , #6 / , |