*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan000811021110
Feb062764377663
Mar0581183001241
Apr01331948002081
May34522355004880
Jun269096413009535
Jul3520072810004852
Aug14301282001326
Sep1795600964
Oct0167800679
Nov0043100431
Dec00275514411721
Total79158601060717292029483