Historical clue formulations

• "I'll wait to hear from you" — 2023-12-26
• What an extended thumb and pinkie by your face might mean — 2023-11-03
• Phone line? — 2022-01-01
• "You have my number!" — 2021-12-29
• 1980 Blondie hit — 2019-04-02
• Theme song from "American Gigolo" — 2009-10-28
• Common answering machine message — 1995-06-18