*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0000166166
Feb003603874
Mar00710071
Apr11658400601
May115189514005714
Jun721061210400011724
Jul5111382921004110
Aug5121698001715
Sep281408001418
Oct0020600206
Nov00260026
Dec00320269301
Total142169758536047326126