*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002586588
Feb1351732220431
Mar013830900447
Apr022734400571
May111451184001646
Jun152059360002434
Jul9766528001303
Aug79252100620
Sep28757400663
Oct07034900419
Nov05026600316
Dec0121150641768
Total45498737234144710206