*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0005253258
Feb002206284
Mar01670068
Apr15585500911
May92864583003456
Jun1536772405006097
Jul152981193001506
Aug4257200578
Sep1436400369
Oct0133000331
Nov0010000100
Dec00533564620
Total4569026544887914378