*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0000144144
Feb0052048100
Mar01516700182
Apr015333400487
May244450000568
Jun127669700785
Jul62528800319
Aug13870091
Sep00710071
Oct00730073
Nov00750075
Dec00551274330
Total43316239914663225