*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0008129137
Feb032515382
Mar0991200111
Apr347170067
May9104928001086
Jun11263248002691
Jul31471230001704
Aug11426800283
Sep0220300205
Oct00870087
Nov00590059
Dec00442504550
Total2753171021116867062