Historical clue formulations

• The 1 and 2 in 1 + 2 = 3 — 2012-10-03
• Total producers — 2010-09-25
• All the parts of a column except the bottom — 2008-02-17
• Figures above a line — 2007-04-27
• Summer figures? — 2003-10-11
• Calculator figures — 1998-06-21