*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan000000
Feb000000
Mar009009
Apr01843800456
May147791540008345
Jun106219138580022877
Jul7534962528006099
Aug6211684001711
Sep241160001166
Oct00520052
Nov002002
Dec001034
Total2033324372720340721