01/31 - 141
02/28 - 137.2
03/31 - 138.0
04/30 - 137.2
05/31 - 139.2
06/30 - 138.6
07/31 - 138.0
08/31 - 137.0
09/30 - 138.4
10/31 - 138.8
11/30 - 138.4 (estimated, dnw)
12/31 - 138.8
01/31 - 140.2
02/29 - 139.2

03/01 - 139.4
03/02 - 138.8
03/03 - 138.2
03/04 - 138.6
03/05 - 138.6
03/06 - 139.2