*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0005860865
Feb032391296539
Mar0851600524
Apr31864200663
May61048164001218
Jun2617231302003051
Jul291561228001413
Aug9578700801
Sep0479300797
Oct1050000501
Nov0040600406
Dec00213112831497
Total74296567907243912275