*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0007461468
Feb001792192373
Mar0236200364
Apr1426800273
May2642100429
Jun61125300270
Jul6117800185
Aug4220300209
Sep0236800370
Oct0168400685
Nov1037800379
Dec001550542697
Total20293449911954702