*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0006920926
Feb302111306521
Mar1334800352
Apr121341200437
May21936000390
Jun704029700407
Jul691428700370
Aug4938800401
Sep1094100942
Oct0164600647
Nov0037900379
Dec0025408371091
Total181894523720636863