*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00003333
Feb002068
Mar00170017
Apr01661700633
May02835468003303
Jun203745132003897
Jul3218541629003515
Aug291174800788
Sep142419002424
Oct101014001015
Nov00350035
Dec00200125145
Total8384657101016415813