*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan21201024
Feb100203
Mar0019451478
Apr00419443178
May0010818756351
Jun00133566125824
Jul007727452403
Aug001527040325
Sep0011555161
Oct00058058
Nov00011011
Dec33007040
Total55239416703352456