| Covers listed | |
| 1992: | November, |
| 1993: | November, |
| 1994: | January, April, December, |
| 1995: | February, March, August, |
| 1996: | February, September, December, |
| 1997: | April, |
| 1998: | March, April, June, August, September, |
| 2000: | July, |
| 2004: | July, |
| 2008: | January, |
| 2009: | October, |
| 2010: | November, |
| 2012: | February, April, |
