*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0000139139
Feb002903059
Mar03530056
Apr114347100615
May164795510005321
Jun65944610390010550
Jul367462743003525
Aug4111220001235
Sep2893100941
Oct0015300153
Nov00170017
Dec00290258287
Total124151527195042722898