*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0000158158
Feb0058058116
Mar01520500220
Apr015539300548
May244862400696
Jun137883700928
Jul62536900400
Aug1312600130
Sep00860086
Oct00900090
Nov00960096
Dec00651287353
Total44324294915033821