*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0000246246
Feb1087081169
Mar6157400581
Apr081186001194
May31081385001496
Jun23711047001141
Jul19534400368
Aug9125200262
Sep0030000300
Oct0035200352
Nov0027600276
Dec00660260326
Total61194586905876711