*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan000011
Feb012014
Mar113580072
Apr222741786002082
May346813102003529
Jun4131463280003839
Jul831473201004079
Aug199322794003025
Sep36131457001506
Oct3016300166
Nov00160016
Dec003047
Total2061397158620618326