*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00011554565
Feb021592162325
Mar93730200348
Apr63728700330
May464808300609
Jun104781120001005
Jul1097375100933
Aug333845800529
Sep6434300353
Oct0023100231
Nov0016800168
Dec001152863980
Total313145230171515796376