*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002432613285
Feb3515711114413031
Mar23454852004920
Apr177956155006427
May4981998654009351
Jun4401533845004438
Jul153262242002421
Aug931742001754
Sep432052002059
Oct001775001775
Nov001710001710
Dec00898126993598
Total13075293549636740144769