2007
December
2008
March
May
July
October
December
2009
March
May
August
October
December
2010
March
May
July
October
December
2011
March
May
July
October
December
2012
March-April
May-June
July-August
October-
November
2013
December(12)-January
March-April
May-June
July-August
September-October
November - February
2014
March - April
May - June
July - August
September - November
December - February
2015
March - April
May - June
July - August
October - November
December - February
2016
March - April
May - June
July - September
October - November
December - February
2017
March - April
May - June
July - September
October - November
December - March 2018
(c) Bill Stevenson 2013
2018
March - April
July - September
October - November
December - February 2019
2019
March - April
May - June
July - September
October - November
December - April 2020
2020
April - July
July - December
December - April 2021
2021
April - July
July
October
December
2022
April
July
May - June