*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00126348375
Feb001595148312
Mar1524600252
Apr141026200286
May171240746002003
Jun1937071420005146
Jul81213801002022
Aug21426100277
Sep01032100331
Oct0222300225
Nov0015800158
Dec001067772885
Total616201470438126812272