*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0003130453076
Feb071068612292310
Mar9262064002099
Apr6752073002154
May174074376004467
Jun656225366006656
Jul4514942444003983
Aug7291777001813
Sep161541001548
Oct011292001293
Nov031032001035
Dec00543824813032
Total150119401457645675533466