Historical clue formulations

• One-percenter suffix — 2021-07-07
• Moneyed suffix — 2019-12-12
• Frigid suffix — 2019-10-03
• Suffix with billion — 2019-03-03
• Suffix for the 1% — 2018-06-22
• Suffix with million — 2017-03-20
• Suffix with high numbers — 2016-05-04
• River through Yorkshire — 2015-07-05
• Rich person's suffix? — 2014-04-04
• Suffix with concession — 2014-01-07
• Suffix with zillion — 2013-01-13
• Suffix for the wealthy — 2011-06-28
• Suffix with concession — 2011-06-16
• Suffix with trillion — 2011-04-13
• Suffix with zillion — 2011-03-23
• Suffix for the wealthy — 2010-06-22
• It flows through Knottingley — 2010-04-09
• Suffix with zillion — 2010-03-15
• Suffix with Frigid- — 2010-03-09
• Suffix with billion — 2009-11-15
• Suffix with billion — 2009-08-31
• Suffix with concession — 2009-05-11
• Suffix with million — 2008-06-23
• Suffix with zillion — 2008-06-08
• Suffix with billion — 2008-05-25
• Suffix with billion — 2008-04-20
• Suffix with billion — 2008-02-26
• Frigid finish? — 2007-06-24
• River of Leeds — 2006-12-08
• Del ___ (Los Angeles suburb) — 2006-04-14
• Ending with some very large numbers — 2005-12-03
• Leeds's river — 2005-11-03
• Suffix with million — 2005-05-17
• Frigid finish — 2004-08-01
• Large number suffix — 2004-06-06
• Concession closer? — 2002-03-27
• Frigid add-on — 2001-09-05
• Leeds's river — 2001-08-30
• Leeds's river — 2001-05-11
• River to Leeds — 2001-04-15
• Frigid follower? — 2001-01-28
• Suffix with concession — 2000-12-25
• Frigid finish — 2000-08-17
• Yorkshire river — 1999-12-29
• Suffix added to large numbers — 1999-11-14
• Frigid finish — 1999-09-26
• Suffix with concession — 1999-04-06
• Yorkshire river — 1999-03-31
• Suffix with million — 1999-01-18
• Billion follower — 1998-10-06