*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0003523526
Feb001571196354
Mar01230300315
Apr01013000140
May04244400468
Jun12134648001406
Jul746740800882
Aug5728100293
Sep0025000250
Oct0031500315
Nov0033700337
Dec001651760926
Total2422662438514796212