*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0003138173848
Feb071187614882688
Mar9262508002543
Apr7752515002597
May204973391005384
Jun707061373007504
Jul4918552703004607
Aug9292623002661
Sep162370002377
Oct011822001823
Nov031458001461
Dec00791833274126
Total165140361874145863241619