*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00026861887
Feb011811174357
Mar02339300416
Apr58867500768
May51178261001444
Jun91209449001667
Jul8651158001231
Aug7181372001397
Sep271102001111
Oct1258000583
Nov0037300373
Dec00176111071284
Total372591672028214211518