*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00001515
Feb0050510
Mar2381096001136
Apr171072789002913
May1031873511003801
Jun1221843013003319
Jul61621656001779
Aug16251401001442
Sep351019001027
Oct1054900550
Nov0013800138
Dec011903757
Total3256091519605716187