*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002689691
Feb001631167331
Mar873554000662
Apr180511502001733
May192282570002790
Jun164562956003176
Jul90242001002115
Aug19101381001410
Sep0180200803
Oct0028200282
Nov0018800188
Dec001150759874
Total732205125003161515055