*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002586588
Feb1351732220431
Mar013831300451
Apr022834900577
May111452187001650
Jun152059362002436
Jul9766530001305
Aug79252200621
Sep28758600675
Oct07035300423
Nov05026600316
Dec0121160641769
Total45498937574144710242