*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0001620492065
Feb0185339081765
Mar4133372003389
Apr8363819003863
May856541588007214
Jun1249077696009897
Jul328072555003394
Aug452072002081
Sep192230002240
Oct011874001875
Nov0087800878
Dec00435219792416
Total258164901937221493641077