The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- 04/2015 (4 members)
- 04/2016 (14 members)
- 04/2017 (2 members)
- 04/2018 (3 members)
- 04/2019 (9 members)
- 04/2020 (26 members)
- 04/2021 (24 members)
- 04/2022 (12 members)
- 04/2023 (4 members)
- 04/2024 (2 members)
- 05/1985 (1 member)
- 05/1987 (1 member)
- 05/1994 (1 member)
- 05/1996 (1 member)
- 05/1997 (1 member)
- 05/1998 (2 members)
- 05/1999 (3 members)
- 05/2000 (2 members)
- 05/2003 (9 members)
- 05/2004 (5 members)
- 05/2005 (8 members)
- 05/2006 (2 members)
- 05/2009 (2 members)
- 05/2011 (2 members)
- 05/2012 (1 member)
- 05/2014 (4 members)
- 05/2016 (5 members)
- 05/2017 (1 member)
- 05/2019 (6 members)
- 05/2020 (32 members)
- 05/2021 (21 members)
- 05/2022 (10 members)
- 05/2023 (9 members)
- 05/2024 (9 members)
- 06/11 (1 member)
- 06/1987 (1 member)
- 06/1998 (2 members)
- 06/1999 (1 member)
- 06/2002 (1 member)
- 06/2003 (16 members)
- 06/2004 (1 member)
- 06/2005 (6 members)
- 06/2006 (1 member)
- 06/2007 (2 members)
- 06/2008 (2 members)
- 06/2009 (9 members)
- 06/2011 (6 members)
- 06/2013 (3 members)
- 06/2014 (3 members)
- 06/2015 (2 members)