*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0000100100
Feb0050051101
Mar0651427001492
Apr42774783005064
May30140149650015009
Jun773957620070041660
Jul4945553915008519
Aug12262080002118
Sep0121867001879
Oct1087500876
Nov00940094
Dec10340245280
Total1745852518097039677192