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