*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00010426436
Feb101560111268
Mar1044700448
Apr361958001967
May251252406002556
Jun1561641469001789
Jul991772300839
Aug25668400715
Sep0274100743
Oct1199400996
Nov0055300553
Dec001210490611
Total3113211025210102711921