Historical clue formulations

• Words of decree — 2024-06-02
• "Indeed" — 2023-06-04
• "Indeed" — 2021-09-19
• "Quite true" — 2020-02-25
• "Quite correct" — 2019-06-24
• "That must be the case" — 2018-06-08
• "Quite true" — 2016-12-25
• "Quite correct" — 2016-01-20
• "True" — 2015-10-25
• "True" — 2013-09-29
• Formal "yes" — 2013-03-07
• "Yes" — 2012-11-21
• "True" — 2012-10-11
• "Yea, verily" — 2011-05-21
• "Yes, indeed" — 2010-01-31
• Statement of fact — 2009-08-16
• "True" — 2008-05-25
• "Yes, indeed!" — 2006-07-27
• "Yea" — 2005-07-24
• "Yes" — 2004-05-30
• "Yea, verily" — 2001-07-01