| Covers listed |
|
| 1973: | August, November, |
| 1974: | December, |
| 1975: | February, |
| 1976: | May, September, December, |
| 1977: | January, August, |
| 1978: | January, February, July, September, November, December, |
| 1979: | January, June, |
| 1981: | June, September, October, |
| 1982: | January, February, |
| 1983: | April, May, |
| 1984: | August, |
| 1985: | March, November, |
| 1986: | January, February, |
| 1990: | July, |
| 1997: | March, November, |
| 1998: | January, |
| 1999: | May, |
| 2000: | December, |
| 2002: | March, June, |
| 2003: | March, May, July, August, |
| 2004: | February, |
| 2005: | February, July, November, |
| 2006: | July, October, December, |
| 2007: | May, August, September, |
| 2008: | February, June, August, October, |
| 2009: | January, February, April, May, June, July, August, |
| 2010: | March, |
| 2011: | April, July, |
| 2012: | January, March, July, |
| 2013: | April, July, August, November, December, |
| 2014: | April, September, |
| 2015: | April, |
| 2016: | April, June, September, |
| 2017: | June, September, November, December, |
| 2018: | January, February, May, September, December, |
| 2019: | January, August, |
| 2020: | February, July, August, November, December 2020/ January 2021, |
| 2021: | April, May, |
| 2022: | May, December 2022/ January 2023, |
| 2023: | October/November, December 2023/ January 2024, |
| 2024: | February/March, April/May, June/July, August/September, October/November, December 2024/ January 2025, |
