*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00029200229
Feb0172866147
Mar0511501121
Apr3128500100
May154172240004427
Jun16108956940011605
Jul164319463004798
Aug72427200303
Sep2620500213
Oct0210100103
Nov00670067
Dec10433864911
Total6019436235740113123024