*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00002828
Feb002046
Mar04160020
Apr019752800725
May42428449002881
Jun263343132003501
Jul4415121498003054
Aug251056500600
Sep151784001790
Oct1067700678
Nov00240024
Dec00150112127
Total10174995690014413434