| Covers listed |
|
| 1981: | September, November, |
| 1982: | March, November, |
| 1983: | March, May, June, November, |
| 1987: | May, June, September, |
| 1989: | March, |
| 1993: | August, October, |
| 1994: | January, March, April, May, June, July, September, October, November, |
| 1995: | February, March, August, October, November, |
| 1996: | January, July, September, December, |
| 1997: | February, June, August, September, |
| 1998: | January, February, May, October, November, |
| 1999: | January, March, May, July, October, November, |
| 2000: | January, February, April, August, October, November, |
| 2001: | January, March, December, |
| 2002: | January, March, June, December, |
| 2003: | January, July, August, November, |
| 2004: | May, August, December, |
| 2005: | February, June, August, November, December, |
| 2006: | February, March, October, |
| 2007: | March, June, July, August, September, November, December, |
| 2008: | January, September, October, December, |
| 2009: | June, December, |
| 2010: | February, July, September, November, |
| 2011: | January, March, April, November, December, |
| 2013: | January, December, |
| 2014: | January, |
| 2015: | January, June, November, |
| 2017: | May, September, |
| 2018: | July, November, |
| 2019: | January, February, May, June, July, August, October, November, |
| 2020: | January, February, April, May, October, December, |
| 2021: | February, October, |
| 2023: | January, April, June, September, October, November, |
| 2024: | February, April, |
| 2025: | April, |
