*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0000434434
Feb001880177365
Mar0262600628
Apr01276900781
May63480300843
Jun331941600468
Jul42723400283
Aug20013600156
Sep10840085
Oct0016500165
Nov0027600276
Dec001311625757
Total102743828112365241