*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0003138173848
Feb071187614882688
Mar9262508002543
Apr7752515002597
May204973394005387
Jun707067373007510
Jul4918552703004607
Aug9292624002662
Sep162371002378
Oct011822001823
Nov031458001461
Dec00791833274126
Total165140421874645863241630