*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002420402064
Feb0967457731461
Mar0281353001381
Apr8431396001447
May162564224002804
Jun222459238002719
Jul182611091001370
Aug54997001006
Sep1292200925
Oct0187100872
Nov0078500785
Dec00500519822487
Total705371905134479519321