*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0006916922
Feb302161305525
Mar1335100355
Apr121341800443
May20936600395
Jun704029800408
Jul691429000373
Aug4938600399
Sep1095000951
Oct0164800649
Nov0038100381
Dec0025608321088
Total180894560720536889