*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0004521525
Feb001101133244
Mar0419000194
Apr11914100161
May41370176001550
Jun535919673006645
Jul505144198004762
Aug39462875002960
Sep631188001197
Oct0131600317
Nov0016500165
Dec00890629718
Total1537876101215128319438