*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0006150156
Feb00103384190
Mar0015200152
Apr0415200156
May04190023
Jun242230067
Jul131519900227
Aug529700104
Sep00340034
Oct0015900159
Nov0019700197
Dec00510256307
Total2067118694901772