| Covers listed |
|
| 1953: | May, June, August, September, October, November, December, |
| 1954: | January, February, March, April, May, June, July, August, September, October, November, December, |
| 1955: | January, February/March, April, May, June, July, August, September, October, November, |
| 1956: | January, February, |
| 1957: | May, |
| 1962: | January, |
| 1964: | February/March, April, May/June, July/August, September-November, December, |
| 1965: | January/February, March/April, May/June, July/August, August-November, |
| 1966: | January/February, February/March, April/May, June/July, August/September, September/October, October-December, Dec. '66-February, |
| 1967: | February-April, April-June, June-August, August/September, October-December, Dec. '67-February, |
| 1968: | March/April, May/June, June-August, August-October, October-December, Dec. '68-January, |
| 1969: | February/March, April/May, June/July, September-December, Dec. '69-February, |
| 1971: | September/November, |
| 1972: | June/July, September-November, |
| 1973: | April/May, May/June/July, July-September, September/November, Dec./January, |
| 1974: | February/March, April/May, May-July, July-September, September/November, December, |
| 1975: | Dec./January, February/March, April/May, May-August, August-November, |
| 1976: | Dec./January, February/March, April/May/June, June/July/August, August-November, December, |
| 1977: | Dec. '76/January, February/March, April, May, June, July, August, September, October, November/December, |
| 1978: | January, February, March, April, May, July, August, September, October/November, December, |
| 1979: | January, February, March, April, May, June, July, August, September, October/November, November/December, |
| 1980: | January, March, April, June, September, October/November, December, |
| 1981: | March, April, May, June, July, August, September, October, November/December, |
| 1982: | January, February, March, April, May, June, July, August, September, October-December, December, |
| 1983: | January, February, March, April, May, June, July, August, September/October, October/November, December, |
| 1984: | January, February, March, April, May, June, July, August, September, October/November, December, |
| 1985: | January, February, March, April, May, June, July, August, September/October, October/November, December, |
| 1986: | January, February, March, April, May, June, July, August, September/October, October/November, December, |
| 1987: | January, February, March, April, May, June, July, August, September/October, October/November, December, |
| 1988: | January, February, March, April, May, June, July, August, September/October, October/November, December, |
| 1989: | January, February, March, April, May, June, July, August, September/October, October/November, December, |
| 1990: | January, February, March, April, May, June, July, August, September/October, October/November, November/December, |
| 1991: | January, February, March, April, May, June, July, August, September/October, October, October, October/November, November/December, |
| 1992: | January, February, March, April, May, June, July, August, September/October, October/November, November/December, , , , |
| 1993: | January, February, March, April, May, June, July, August, September, October/November, November/December, , , |
| 1994: | January, February, March, April, May, June, July, August, September, October/November, November/December, , , |
| 1995: | January, February, March, April, May, June, July, August, September, October/November, November/December, , |
| 1996: | January, February, March, April, May, June, June, July, August, September, October/November, November/December, , |
| 1997: | January, February, March, April, May, June, July, August, September, October/November, November/December, , , |
| 1998: | January, February, March, April, May, June, July, August, September, October/November, November/December, , |
| 1999: | January, February, March, April, May, June, July, August, September, October/November, November/December, , |
| 2000: | March, June, November, |
| 2004: | November, |
| 2005: | January, |
| 2006: | September, October, November, |
| 2007: | January, February, 1-11 March, March/April, May, June, July, August, September, December, |
| 2008: | January, February, March, April, May, June, July, September, October, November, December, |
| 2009: | January, March, |
| 2013: | December, |
| 2014: | September/October, October/November, |
| 2016: | December, |
| 2017: | January, |
| 2018: | March, |
| 2023: | April, May, August, October/November, December, |
| 2024: | April/May, |
| 2025: | February/March, May, July, August, September/October, October/November, December, |
| 2026: | January, February/March, April, May, June, |
