*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002432613285
Feb3515711114413031
Mar23454852004920
Apr177946143006414
May4891958650009334
Jun4401533845004438
Jul153262242002421
Aug931741001753
Sep432047002054
Oct001770001770
Nov001710001710
Dec00898126993598
Total12985243546936740144728