*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00010519529
Feb001851256442
Mar0950200511
Apr31068200695
May76152366006525
Jun15192628370020114
Jul16711544960011627
Aug10202592002622
Sep131677001681
Oct0073200732
Nov0028500285
Dec00890765854
Total52325711244311154046617