*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0000773773
Feb101721209383
Mar852955800672
Apr194511602001847
May230282799003057
Jun183613441003685
Jul96252336002457
Aug19121849001880
Sep021141001143
Oct0036900369
Nov0025400254
Dec0015408681022
Total808208146751185017542