*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00002828
Feb002046
Mar04160020
Apr019852900727
May42432452002888
Jun263396137003559
Jul4415261507003077
Aug251056600601
Sep151785001791
Oct1067800679
Nov00240024
Dec00150112127
Total10175715711014413527