Historical clue formulations

• "No idea" — 2026-08-20
• "Haven't the foggiest" — 2026-03-10
• [Shrug] — 2023-03-16
• "Beats the heck out of me" — 2022-02-23
• Puzzled remark — 2020-12-27
• Verbal shrug — 2019-11-14
• "You got me" — 2019-09-12
• "Couldn't tell ya!" — 2018-08-28
• Verbal shrug — 2018-08-17
• Comment accompanying a shrug — 2018-07-26
• "Uh, no idea" — 2017-10-10
• "Don't ask me!" — 2015-02-17
• "Beats me" — 2014-09-05
• "No idea" — 2014-01-27
• "Can't say" — 2013-10-21
• "No idea" — 2012-02-20
• "Beats me!" — 2010-07-27
• "Ya got me!" — 2007-08-03
• "Beats me!" — 2002-07-12
• "Beats me" — 2001-08-13
• "Beats me" — 2001-05-20