*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0000100100
Feb0050051101
Mar0651426001491
Apr42764783005063
May30140149650015009
Jun773957620050041658
Jul4945553914008518
Aug12262080002118
Sep0121867001879
Oct1087500876
Nov00940094
Dec10340245280
Total1745852418093039677187