*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00522532
Feb102601239
Mar6014000146
Apr0630900315
May310241800523
Jun166734900432
Jul8510900122
Aug51880094
Sep0010300103
Oct0010300103
Nov00610061
Dec00110130141
Total39181172221672111