*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002426592683
Feb3513211111782518
Mar18454096004159
Apr161935115005369
May4411887106007735
Jun3961533199003748
Jul136261853002015
Aug931265001277
Sep431455001462
Oct001321001321
Nov001235001235
Dec00648120172666
Total11685162861436585436188