*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00002929
Feb102302246
Mar0147600477
Apr2546200469
May21993100961
Jun69341645001748
Jul16579400815
Aug2234200346
Sep3018000183
Oct0019200192
Nov00950095
Dec0024091115
Total11456516401425476