*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00001010
Feb003003
Mar6011100117
Apr31147800492
May1713263000779
Jun4511852300686
Jul2769200125
Aug6217800186
Sep0114000141
Oct0011200112
Nov00420042
Dec00815059
Total10427023171602752