*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0003104107
Feb112303055
Mar374135300431
Apr1287044600644
May19471750001015
Jun2861411176001603
Jul1295670600891
Aug204163300694
Sep2544800455
Oct0022100221
Nov00420042
Dec001807290
Total797426481632066248