Historical clue formulations

• Kind of year: Abbr. — 2019-03-10
• Money-related: Abbr. — 2011-10-30
• Kind of year: Abbr. — 2010-12-30
• Money-related: Abbr. — 2004-10-27
• Kind of year: Abbr. — 2002-03-08
• Money-related: Abbr. — 1999-08-06