*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0004823827
Feb002471280528
Mar11237700390
Apr251636700408
May713443000535
Jun1657061600851
Jul1043474300881
Aug41074300757
Sep1057500576
Oct0037600376
Nov0039000390
Dec0026138871151
Total3711765125819907670