*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002586588
Feb1351732220431
Mar013831300451
Apr022834900577
May111452187001650
Jun152059362002436
Jul9766529001304
Aug79252200621
Sep28757600665
Oct07035200422
Nov05026600316
Dec0121160641769
Total45498937454144710230