*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002811601188
Feb014207401829
Mar32072571002781
Apr158504697005562
May154142139850015352
Jun3623109114620032915
Jul290652579820014797
Aug62493090003201
Sep6122241002259
Oct001086001086
Nov0029900299
Dec00173011431316
Total892529482500635270481585