*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00015290305
Feb00900118208
Mar0314800151
Apr112318500219
May896528700441
Jun19815644400798
Jul19420040700801
Aug474728100375
Sep4227900285
Oct0019900199
Nov0115000151
Dec001015467573
Total5434972571208754506