*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00001010
Feb000011
Mar20110013
Apr5257100578
May5311234001270
Jun12974899001102
Jul702041200502
Aug12340600421
Sep3034600349
Oct1138800390
Nov0013400134
Dec001304760
Total22713144140584830