Historical clue formulations

• "Yippee for us!" [4th of 7] — 2023-07-12
• First three words famously said by Kamala Harris to Joe Biden upon winning the 2020 election — 2022-03-22
• "Way to go, team!" — 2019-09-15
• *"Yay for us!" — 2019-03-26
• "Hooray for us!" — 2015-01-06
• Cooperation exclamation — 2014-02-01
• Cry of accomplishment — 2010-02-05
• Celebratory cry — 2008-05-23
• Team member's triumphant shout — 2001-05-06