Week ending Rank Streak
September 4, 2007 16 1
September 8, 2007 19 2
January 24, 2009 6 3
January 31, 2009 17 4
February 21, 2009 3 5
March 21, 2009 3 6
August 22, 2009 18 7
August 29, 2009 1 8
December 19, 2009 21 9
January 16, 2010 15 10