*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0005658663
Feb121693206381
Mar0944400453
Apr23281700851
May15521086001153
Jun236884300934
Jul651444600525
Aug63638200451
Sep36634800390
Oct9233500346
Nov1223500238
Dec001201565686
Total2151935225914297071