*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0005252257
Feb002106182
Mar01670068
Apr15886000919
May92882590003481
Jun1536812407006103
Jul153001197001512
Aug4257100577
Sep1437200377
Oct0133600337
Nov0010300103
Dec00523565620
Total4569296576887814436