| Covers listed |
|
| 1991: | March, |
| 1998: | May, November, |
| 1999: | January, May, August, |
| 2000: | January, June, |
| 2001: | January, March, April, July, September, November, |
| 2002: | April, May, July, August, September, October, November, December, |
| 2003: | January, February, March, April, July, August, November, |
| 2004: | January, February, March, May, September, November, December, |
| 2005: | March, April, May, June, July, August, November, December, |
| 2006: | January, February, March, April, May, August, November, December, |
| 2007: | February, March, April, May, June, July, October, |
| 2008: | January, February, March, April, May, August, September, November, December, |
| 2009: | January, February, March, April, May, June, August, September, October, December, |
| 2010: | January, April, June, July, September, October, December, |
| 2011: | March, April, May, July, #276 / August, September, October, #279 / November, |
| 2012: | January, March, April, June, July, August, September, October, |
| 2013: | February, March, April, May, June, August, November, December, |
| 2014: | May, August, September, October, November, |
| 2015: | January, March, April, #321 / May, July, August, September, October, November, December, |
| 2016: | January, February, March, April, June, August, September, December, |
| 2017: | February, April, May, July, August, August, November, December, |
| 2018: | January, April, July, November, December, |
| 2019: | January, February, March, April, May, June, August, September, October, |
| 2021: | October, |
| 2023: | January, March, |
| 2024: | December, |
