*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00028403431
Feb001675155327
Mar1525400260
Apr141028200306
May201240791002051
Jun2337211487005231
Jul101215835002060
Aug21426300279
Sep01032400334
Oct0222400226
Nov0016100161
Dec0013279761115
Total706217492040153412781