*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0000434434
Feb001870176363
Mar0262200624
Apr01276600778
May63479500835
Jun331941100463
Jul42723200281
Aug20012800148
Sep10810082
Oct0016300163
Nov0027400274
Dec001291623753
Total102743788112335198