*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0000643643
Feb101511170323
Mar772947100577
Apr175521317001544
May195262315002536
Jun170602889003119
Jul93252005002123
Aug19111412001442
Sep0281900821
Oct0028100281
Nov0019100191
Dec001210761882
Total730205119721157414482