Historical clue formulations

• Like some diet drinks — 2012-01-23
• Lite as can be — 2010-01-09
• For dieters — 2008-10-07
• Diet drink phrase — 2006-06-05
• Ideal for dieters — 2002-02-05
• Not putting on any weight — 2000-10-29
• Suitable for extreme dieters — 1998-11-06
• Diet — 1998-01-08
• Diet beverage brand — 1996-09-06