*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0000100100
Feb0050051101
Mar0651429001494
Apr42774787005068
May30140149700015014
Jun773957720080041662
Jul4945553915008519
Aug12262080002118
Sep0121868001880
Oct1087500876
Nov00940094
Dec10340245280
Total1745852618110039677206