*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00012137149
Feb003042458
Mar00480048
Apr16520059
May1210455400670
Jun484321582002062
Jul27278784001089
Aug41111000125
Sep07881096
Oct00430043
Nov00420042
Dec00422699743
Total928383375198605184