*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00115145161
Feb00102149152
Mar1321100215
Apr31532200340
May2542451400963
Jun482817682003547
Jul1639425800668
Aug1420500210
Sep0822900237
Oct0116500166
Nov00710071
Dec00662742810
Total9436662826189367540