*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00012777789
Feb034934323823
Mar0581222001280
Apr71591042001208
May333754273004060
Jun95177515910018437
Jul4422131361003618
Aug9946500483
Sep0241900421
Oct0042300423
Nov0033400334
Dec001420832974
Total18823949676516193232850