*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0003260263
Feb13690116189
Mar02412700151
Apr1218400106
May4610000110
Jun51712000142
Jul55570067
Aug24480054
Sep11790081
Oct1113200134
Nov1012900130
Dec00720306378
Total2182101736821805