Week ending Rank Streak
September 4, 2007 5 1
September 8, 2007 8 2
September 15, 2007 15 3
September 22, 2007 19 4
January 24, 2009 2 5
January 31, 2009 2 6
August 22, 2009 15 7
December 19, 2009 2 8
January 16, 2010 8 9