Historical clue formulations

• Accelerated — 2024-09-22
• Went from a trot to a canter, say — 2024-06-20
• Stepped on it — 2023-07-10
• Hastened — 2019-05-08
• Ran harder — 2017-12-30
• Floored it — 2017-01-18
• Hit the gas — 2012-10-17
• Hit the accelerator — 2012-07-19
• Was a catalyst for — 2009-05-09
• Accelerated — 2004-05-30
• Accelerated — 2003-04-02