*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0000246246
Feb1097081179
Mar6157500582
Apr081190001198
May31081398001509
Jun23711047001141
Jul19534300367
Aug9126000270
Sep0030800308
Oct0036300363
Nov0028800288
Dec00680261329
Total61194593705886780