| Covers listed |
|
| 1961: | Winter, |
| 1962: | September, |
| 1963: | December, |
| 1964: | March, Winter, |
| 1965: | March, Winter, |
| 1966: | February, April, Winter, |
| 1968: | September, |
| 1975: | April, |
| 1977: | Winter, |
| 1978: | October, |
| 1979: | October, |
| 1980: | March, April, October, |
| 1981: | March, September, December, |
| 1982: | April, |
| 1983: | June, December, |
| 1984: | January, February, March, April, May, July, September, December, |
| 1985: | January, March, June, July, August, November, December, |
| 1986: | January, February, March, May, June, July, October, November, December, |
| 1987: | January, February, April, May, June, July, August, October, November, December, |
| 1988: | January, March, June, July, August, October, November, December, |
| 1989: | February, May, June, July, August, October, November, December, |
| 1990: | January, February, April, May, July, August, October, November, December, |
| 1991: | January, February, March, April, May, June, July, October, November, December, |
| 1992: | February, March, April, May, June, July, August, September, December, |
| 1993: | March, June, July, August, October, December, |
| 1994: | January, March, May, June, July, October, October, December, |
| 1995: | January, February, March, April, May, June, July, August, October, November, December, December, |
| 1996: | January, February, March, May, June, August, November, December, |
| 1997: | January, February, March, June, July, August, September, October, November, December, |
| 1998: | February, March, May, July, October, November, December, |
| 1999: | January, March, May, November, December, |
| 2000: | January, February, March, May, September, November, December, |
| 2001: | March, April, June, August, December, |
| 2002: | September, November, December, |
| 2003: | February, March, June, July, August, October, |
| 2004: | January, March, May, June, August, October, November, December, |
| 2005: | January, March, April, May, June, July, October, December, |
| 2006: | February, March, April, May, June, July, September, October, December, |
| 2007: | January, February, March, April, June, July, August, October, November, |
| 2008: | January, February, April, May, June, July, September, October, December, |
| 2009: | January, March, April, June, September, October, November, December, January, |
| 2010: | February, March, April, May, June, July, August, September, October, November, December, January, |
| 2011: | February, March, April, May, June, July, August, September, October, November, December, January, |
| 2012: | February, March, April, May, June, July, August, September, October, November, December, |
| 2013: | January, February, March, May, October, November, December, |
| 2014: | January, February, October, |
| 2015: | May, June, |
| 2016: | January, February, March, Spring, April, May, June, August, September, October, November, December, |
| 2017: | January, February, March, April, May, June, July, August, September, November, December 2017/ January 2018, |
| 2018: | February, March, April, May, June, July, August, September, October, November, December 2018/ January 2019, |
| 2019: | May, June/July, October, December 2019/ January 2020, |
| 2020: | April, June/July, September, October, November, December, |
| 2021: | February, May, August, October, November, December 2021/ January 2022, |
| 2022: | February, March, April, May, June, July, August, September, October, November, December, |
| 2023: | March, April, Summer, October, November, |
| 2024: | March, Summer, September, October, November, |
| 2025: | April/May, December 2025/ January 2026, |
| 2026: | Summer, July, |
