*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00210274286
Feb001012111214
Mar0021000210
Apr1011200113
May533243500772
Jun1314761248002737
Jul138671045001925
Aug6860000614
Sep2344300448
Oct0027000270
Nov0016300163
Dec00473351401
Total4026864676157368153