| Covers listed | |
| 1998: | May, September, |
| 1999: | January, |
| 2000: | January, February, August, September, |
| 2001: | August, |
| 2002: | October, |
| 2004: | February, March, July/August, September, December, |
| 2005: | August, December, |
| 2006: | February, |
| 2007: | July, |
| 2008: | February, |
| 2009: | April, July, |
| 2010: | February, September, October, |
| 2011: | January, May, June, July, October, |
| 2012: | May, October, |
| 2013: | January, July, September, November, December, |
| 2014: | February, March, April, |
| 2015: | March, July, October, December, |
| 2016: | March, June, July, August, October, |
| 2017: | April, July, August, October, December, |
| 2018: | January-February, July, September, October, November, December, |
| 2019: | March, July/August, |
