Historical clue formulations

• Abba's home: Abbr. — 2017-09-27
• Perennially strong entrant at the Winter Olympics: Abbr. — 2017-07-11
• Stockholm's home: Abbr. — 2016-12-26
• Neighbor of Den. — 2016-10-16
• Where "crossword" is "korsord": Abbr. — 2016-06-17
• E.U. member not in NATO: Abbr. — 2015-11-15
• Scand. country — 2015-10-25
• Winter Olympics powerhouse: Abbr. — 2015-08-23
• Neighbor of Nor. and Fin. — 2013-09-10
• Neighbor of Nor. — 2012-04-09
• Eur. country with a king — 2011-02-22
• Neighbor of Nor. — 2010-12-28
• Host of the 1912 Olympics: Abbr. — 2010-01-14
• Stockholm's land: Abbr. — 2010-01-11
• Winter Olympics powerhouse: Abbr. — 2009-07-05
• Riksdag locale: Abbr. — 2009-07-01
• Neighbor of Nor. — 2008-08-17
• European Union member: Abbr. — 2008-02-16
• E.U. mem. — 2007-04-20
• Country in Eur. — 2007-03-01
• Halmstad's locale: Abbr. — 2006-10-22
• Winter Olympics powerhouse: Abbr. — 2005-09-23
• Neighbor of Norw. — 2005-07-13
• Nor. neighbor — 2000-04-27
• Winter Olympics powerhouse: Abbr. — 1999-12-11
• Nor. neighbor — 1997-10-05