*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00012622634
Feb032480204455
Mar0964200651
Apr3451659001707
May5501173001228
Jun383255400624
Jul26322100250
Aug0020400204
Sep1024100242
Oct0062200622
Nov0046400464
Dec001240629753
Total7314261521214557834