*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0003451454
Feb101540123278
Mar1042400425
Apr161971001978
May201242680002824
Jun1521651673001990
Jul1061782400947
Aug28680000834
Sep0288200884
Oct111046001048
Nov0070500705
Dec001520567719
Total310321113113114113086