*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00217248267
Feb01111177190
Mar0734000347
Apr11333100345
May125917700248
Jun312113200184
Jul26613000162
Aug6112000127
Sep00960096
Oct00940094
Nov0017601177
Dec00800770850
Total7610817891810963087