*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00124130155
Feb0076545126
Mar0113200133
Apr35629400353
May84711574002053
Jun3911093900005048
Jul377541922002713
Aug22332200347
Sep2627500283
Oct0015700157
Nov00790079
Dec00483367418
Total91242087803254211865