*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00723159189
Feb0177459141
Mar0510900114
Apr311770091
May134161232004406
Jun15107696890011473
Jul164226459004701
Aug72226200291
Sep2620000208
Oct02920094
Nov00610061
Dec10443665713
Total571920323093088322482