| Covers listed | |
| 1974: | July, November, |
| 1976: | March, December, |
| 1977: | May, October, |
| 1978: | January, August, |
| 1980: | August, December, |
| 1981: | May, |
| 1988: | April, |
| 1989: | September, |
| 1992: | November, |
| 1994: | February, |
| 1995: | August, November, |
| 1996: | March, |
| 1997: | February, |
| 1999: | December, |
| 2000: | November, |
| 2004: | June, September, November, |
| 2005: | June, |
| 2006: | May, June, July, November, December, |
| 2007: | January, February, April, May, October, November, December, |
| 2008: | January, May, June, September, November, |
| 2009: | April, June, September, |
| 2010: | March, May, June, September, November, |
| 2011: | March, April, September, |
| 2012: | January, September, |
| 2013: | April, May, November, |
| 2014: | May, June, September, |
| 2015: | April, June, |
| 2016: | April, June, December, |
| 2017: | June, September, |
| 2018: | January, March, August, |
| 2019: | April, August, |
| 2020: | February, |
| 2021: | March, |
| 2022: | April, |
| 2023: | February, November, |
| 2024: | February, April, |
