*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan000000
Feb000000
Mar009009
Apr01843800456
May147791540008345
Jun106219138600022879
Jul7534962529006100
Aug6211686001713
Sep241162001168
Oct00520052
Nov002002
Dec001034
Total2033324372790340728