*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan10563012891376
Feb24244237397875
Mar199321018001249
Apr40674678001158
May29255699011047
Jun2226552900816
Jul702352000613
Aug9437800391
Sep4234700353
Oct1161900621
Nov2282411830
Dec00456611731635
Total1230282654744286110964