*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan000000
Feb000000
Mar015006
Apr0456900114
May999154790010403
Jun69210775900021736
Jul10156063662009369
Aug50211586001657
Sep0282300825
Oct00990099
Nov007007
Dec002046
Total2293666773220444222