*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0000100100
Feb0050051101
Mar0651429001494
Apr42774788005069
May30140149710015015
Jun773957720080041662
Jul4945553920008524
Aug12262081002119
Sep0121870001882
Oct1087500876
Nov00940094
Dec10340245280
Total1745852618120039677216