*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0004140144
Feb0084384171
Mar0014300143
Apr0016000160
May02270029
Jun132320065
Jul142021200246
Aug9710600122
Sep00300030
Oct0017000170
Nov0019700197
Dec00510256307
Total2461121274801784