*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan31639000355
Feb104501330242
Mar0062213230
Apr00123446281
May00934912891647
Jun003637433123722
Jul002728113811689
Aug00324920272
Sep0002665271
Oct0001810181
Nov0001430143
Dec977908901075
Total139753822520605610108