Historical clue formulations

• "Yay!" — 2023-01-23
• "Yay!" — 2021-12-14
• Triumphant cry — 2019-09-08
• Triumphant cry — 2015-08-23
• "Yay, we did it!" — 2014-07-14
• Exclamation of joy — 2010-06-11
• "Yippee!" — 2008-02-05
• Cry of triumph — 2000-11-30
• "Yeah!" — 1998-04-16