*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0005861866
Feb032391296539
Mar0851400522
Apr31764200662
May61047164001217
Jun2617231302003051
Jul291561228001413
Aug9578600800
Sep0479300797
Oct1050000501
Nov0040600406
Dec00213112831497
Total74296367877244012271