*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0003240243
Feb10103072176
Mar6160900616
Apr091174001183
May61071282001395
Jun2472931001027
Jul15531000330
Aug7222100230
Sep0025500255
Oct0034700347
Nov0022600226
Dec00520228280
Total59196551035406308