Week ending Rank Streak
September 4, 2007 12 1
September 8, 2007 15 2
September 15, 2007 22 3
November 17, 2007 1 4
March 1, 2008 17 5
March 15, 2008 4 6
March 22, 2008 14 7
April 12, 2008 21 8
April 26, 2008 23 9
May 10, 2008 18 10
May 17, 2008 8 11
June 14, 2008 9 12
July 5, 2008 19 13
August 2, 2008 6 14
January 24, 2009 21 15
January 31, 2009 22 16
August 22, 2009 1 17
January 16, 2010 3 18