*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0003156159
Feb01650119185
Mar01022200232
Apr03053800568
May32346150002499
Jun113182145003338
Jul24777930001731
Aug12644900467
Sep0036800368
Oct0016400164
Nov00710071
Dec00320285317
Total5063523134356010099