*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0003262265
Feb0086079165
Mar01016000170
Apr11943200452
May31315763002081
Jun281156970002154
Jul7711139700585
Aug471133900397
Sep6437900389
Oct0143400435
Nov0021800218
Dec00760495571
Total1622627425438367882