*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002120122
Feb002602551
Mar0721300220
Apr75374700807
May2696892001014
Jun885452200664
Jul48725100306
Aug15129300309
Sep2225700261
Oct0112900130
Nov00530053
Dec00300188218
Total186221341323334155