*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002426592683
Feb3513211111782518
Mar18454096004159
Apr161935115005369
May4411887106007735
Jun3961533201003750
Jul136261854002016
Aug931265001277
Sep431455001462
Oct001325001325
Nov001235001235
Dec00648120172666
Total11685162862136585436195