*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0000100100
Feb0052051103
Mar0651428001493
Apr42504727004981
May29139229230014874
Jun773924019600041277
Jul4945153922008486
Aug12282090002130
Sep0121882001894
Oct1087300874
Nov00940094
Dec10340244279
Total1735803217985039576585