| Covers listed |
|
| 1981: | May, November, |
| 1982: | September, |
| 1983: | January, February, March, August, |
| 1984: | April, May, June, July, August, September, October, November, December, |
| 1985: | February, April, May, June, August, September, October, December, |
| 1986: | February, March, April, May, June, July, August, September, October, November, December, |
| 1987: | January, February, March, April, May, June, July, August, September, October, November, December, |
| 1988: | January, February, March, April, May, June, July, August, September, October, November, December, |
| 1989: | January, February, March, April, May, June, July, August, September, October, November, December, |
| 1990: | January, February, March, April, May, June, July, August, September, October, December, |
| 1991: | January, February, March, April, May, June, July, September, October, December, |
| 1992: | January, February, March, April, |
