*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan1298000137
Feb521028081
Mar0004764111
Apr00358364
May0091149621085
Jun001139822782687
Jul00346412351702
Aug00126414279
Sep0001982200
Oct00085085
Nov00059059
Dec50420440550
Total6851127175945587040