*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0000100100
Feb0052051103
Mar0651429001494
Apr42764793005073
May30139729640014966
Jun773924020040041321
Jul4945153926008490
Aug12282098002138
Sep0121885001897
Oct1087900880
Nov00950095
Dec10340245280
Total1745810818159039676837