*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0003138183849
Feb071187614882688
Mar9262508002543
Apr7752516002598
May204973394005387
Jun707067373007510
Jul4918552705004609
Aug9292631002669
Sep162372002379
Oct011822001823
Nov031458001461
Dec00791833274126
Total165140421875745863341642