*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0000246246
Feb1097081179
Mar6157700584
Apr081192001200
May31081398001509
Jun23711048001142
Jul19534400368
Aug9126000270
Sep0030900309
Oct0036300363
Nov0028800288
Dec00680261329
Total61194594405886787