*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00001010
Feb000011
Mar20110013
Apr5257100578
May5311234001270
Jun12974907001110
Jul702041300503
Aug12340600421
Sep3034900352
Oct1138800390
Nov0013500135
Dec001304760
Total22713144270584843