*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00012137149
Feb003042458
Mar00480048
Apr16510058
May1210455300669
Jun484301580002058
Jul27278784001089
Aug31110500119
Sep06881095
Oct00430043
Nov00420042
Dec00422698742
Total918353366198595170