| Covers listed |
|
| 2001: | December 2001/ January 2002, |
| 2002: | February/March, June/July, |
| 2003: | March, April, June, July, August, September, October, December, |
| 2004: | May, August, November, December, |
| 2005: | January, June, July, August, October, November, December, |
| 2006: | April, July, August, September, October, November, December, |
| 2007: | July, August, September, October, November, December, |
| 2008: | January, April, May, August, September, December, |
| 2009: | February, May/June, August, |
| 2010: | January, March, April, May, July, August, |
| 2011: | March, April, May, August, November, |
| 2014: | December, |
| 2015: | January, March, August, September, November, December 2015/ January 2016, |
| 2016: | February, June, July, August, September, |
| 2017: | April, June, December 2017/ January 2018, |
| 2018: | March, April, June, October, November/December, |
| 2019: | May, August, November, |
