Changes 12/31/2007 - 10/5/2009:

2009-10-05.......13.73%
2009-09-05.......13.71%
2009-06-05.......13.72%
2009-05-05.......13.59%
2009-04-05.......13.57%
2009-03-05.......13.63%
2009-02-05.......13.67%
2009-01-05.......13.75%
2008-12-19.......13.75%
2008-11-30.......13.80%
2008-09-30.......13.77%
2008-07-30.......13.81%
2008-02-28.......14.36%
2007-12-31.......14.82%