*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0001126127
Feb012904070
Mar324539800475
Apr1247647600676
May19368863001124
Jun3001431309001752
Jul1365678200974
Aug194173900799
Sep2555300560
Oct1029100292
Nov00790079
Dec0028083111
Total807435554712497039